# Why is i used for electrical current?

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It is mostly convention. However this produces conflicts with the conventional mathematics usage of i as the square root of -1 in complex numbers, so in electronics the convention is to use j as the square root of -1 instead when working with complex numbers in the analysis of AC circuits.
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# What do you use to measure an electric current?

An ammeter is used to measure an electric current. Alternatively, you can use a multimeter , set to an appropriate current range.

# What uses chemical reactions to create an electrical current?

A storage battery falls into that category. A load has to be applied to the battery before an electrical current will flow.

# Symbol of measuring unit for current using electrical terms?

The Electric current is measured in three terms namely . Current in Ampere . Resistance in ohm . Potential difference in Volt Ampere is the speed @ which the current passes through the conductor. ohm is the resistant in a current carrying conductor. Volt is the potential difference between the +ve and -ve terminal.

# What is used to measure electric current?

An ammeter, either shunt or inductive. A shunt is an inline resistor of a small, known resistance. Knowing the resistance and the voltage one can calculate the amperage by Ohms law, I=V/R. An inductive, or clamp on ammeter measures the magnetic field and using more complex calculations displays the current, typically on a digital display.

# Why is the letter i used to identify electric current?

The history of electrical study is a long an varied one. Because of this, many conventions used when describing electrical phenomena seem archaic or just plain weird. This particular oddity, using the letter 'I' to represent an electric current is courtesy of Georg Ohm [1] the father of the famous 'Ohm's Law'. Ohm was describing the relationship between resistance, voltage and the Intensity of the electric current [2]. We get the I from intensity. In retrospect, this is ironically fortunate because it saved us from having to later, choose an 'odd' letter to represent Capacitance. [1] Wikipedia: Georg Ohm http://en.wikipedia.org/wiki/Georg_Ohm [2] IEEE History Center: FAQs http://www.ieee.org/web/aboutus/history_center/bitsbytes/faqs.html. The origin of "I" is "intensite", the French word for "current", as Ampere was French.

# What does electric current do for us?

If the question means "What does electricity do for us?" then we could mention lighting, heating, cookers, refrigerators, telephones and cellphones, radios, TVs, computers for a simple start. If the question seeks to differentiate between electric voltage and electric current, then voltage is the measure of the energy of an electric charge and current is a measure of the flow of the charge.

# Which is more useful static or current electricity?

It is current. Because current electricity has moving charges while static electricity has stationary charges.

# What does a switch use to break an electric current?

A switch basically represents a gap in the electric circuit. Electric current can pass through a circuit only if it is complete. An incomplete circuit can never pass a current through it. When the switch is in the 'off' position, the circuit has a break (gap) in it. When you put the switch in 'on' position, the circuit wire join and the circuit gets completed.

# How can you use electric currents to produce magnetism?

Every conductor of electricity creates a magnetic Field when electricity flows through it. What we need to do is create a focus. We do this by wrapping our wire around a piece of iron, a nail or a steel rod works good. You have just created an electromagnet.

# How do you use Electric Current in a sentence?

The light bulb creates light when electric current flows through the filament. Electric current is the movement of charges. It takes electric current to run an electric motor.

# What is the instrument used for electrical current?

An Ammeter is used to measure electrical current, which is measured in Amperes (or Amps).

# Which device is used to store electric current?

Strictly speaking "current" is not stored ... unless you want to talk about modern, superconducting magnets.. What we're able to store, move from place to place, and use when we want it, is either electric charge, or energy in some other form that can be converted to electrical energy.. Charge can be stored in a capacitor or a Leiden jar. If you haven't heard of these, that's because these are not effective ways to store useful amounts of electricity for useful lengths of time.. Energy can be stored for later use in batteries or springs (on a small scale), or in water raised and stored high off the ground (water towers and hydro-dams on larger scale).

# Is direct electric current used in transformers?

no direct current is not used in transformers. the reason is that, if dc is used, there would be no counter emf to oppose it in the primary winding. since the constant flux will be flowing in the dc, there would be no rate of change of flux. as a result, the total current will be applied at the primary winding only. this results in the burning of the total primary winding. ===== The practical application is: If transformer input is DC, transformer output is smoke.

# Where would a thermistor be used in an electrical current?

A thermistor could be used to measure temperature, because its resistance is a function of its temperature. By the same reasoning, a thermistor could be used to temperature compensate a circuit. The best example of this is in the regulator, where the ambient temperature controls the charge voltage, because charge state in a battery is a function of temperature.

# What formula is used for calculating electrical current?

That depends, on the basis of what you want to calculate it. Quite often, Ohm's law is used: voltage = current x resistance.\n

# Why do you use the words electric current for electricity?

Current is a simple descriptor, I was taught to always use it in school as leaving it off was an error. For instance you cannot say A for AC (Alternating Current) as A is amperage.

# Why is current electricity more useful than static electricity?

because static electricity cannot be controlled or manipulated like current electricity (think of the saying "lightning doesnt strike on the same place twice")

# What are the uses of current electricity?

The easiest way to answer your question is to point out that every device you own or use, which you plug into the wall or which contains a battery, makes available to you some use of electrical current. Whatever you use each of those devices for is a use of current electricity.

# What do you use for electric current?

Electricity has been found to be the best thing to use for an electric current.

# Generators use the magnetic field of what to produce an electric current?

Yes, they use a magnetic field to induce current in a conductor (windings). What is the rest of your question?

# Where does electrical current go after it is used in the home?

It is transformed into energy thus causing heat, but the electricity won't go anywhere, remaining inside the wires on the form of electrons when not flowing. When any electric device is turned on, the electricity begins to circulate again within the circuit.

# What is used as an abbreviation for electrical current?

Electrical current is measured in Amperes which is abbreviated toamps. When dealing with formulae the letter I is used to representcurrent, for example: Power = Voltage ÃƒÂ— Current = volts ÃƒÂ— amps = V ÃƒÂ— I Small currents in electrical engineering use the lower case i; thiscan cause confusion with the lower case i that mathematicians usefor Ã¢ÂˆÂš-1, so they use j for Ã¢ÂˆÂš-1 instead.

# What is the normal current when used electric current for direct current?

It doesn't make any sense, but I'd say 12 v? === Most electronics use direct current. Direct current is what you get from a battery. The electricity that is delivered to your house and accessed via wall sockets is alternating current. It is called alternating current because unlike direct current which flows directly in one direction, alternating current alternates directions at a frequency of 60 times per second in the U. S. and 50 times a second in Europe. Most electric motors use alternating current. Electronic devices and chargers have a box, usually built into the plug or sometimes along the power cord, that contains a device to change the alternating current to direct current. ===== The reason alternating current is delivered to houses is: The loss of energy in the cables and wires that carry electricity is less when it's transported at higher voltage. So the electric companies move it around the country, between cities, and from the power generating plants to your neighborhood, at very high voltages, and then step it down just before it enters the houses on the block. To change voltage up and down at various points in the process, transformers are used, and transformers only work with alternating current.

# Why do you use copper and aluminium wire transmission of electric current?

copper and aluminium wires are usually used for electricitytransmission because copper and aluminium are good conductors ofelectricity . They are easily available .

# How do smart grids differ from the current electricity infrastructure in the US?

smart grids are different from the existing infrastructure in the united states because it is much capible to destribute electricity more efficiently and of allowing communications between the various systems of the grid, and they also provide the consumer the detail of there usage and guide them how to reduce there consumption because they exist on modern technology. but the other old existing infrastructure is based on old technology, they have there old destribution plan, line losses and not able to know the usage of every consumer and the peak hours of usage like the smart grids that's why the reason smart grids are better then old electricity infrastructure.

# Why nickel is not advisable to be used as conductor of electrical current?

A: Nickel has a very low point melting value which for that fact makes undesirable as conductor.

# Can an electrical current ever get used up?

No, if it is ever, "Used up" then that means that there is no more flow of electrons. That in turn would mean no electric current is flowing. From Ohm's Law V=IR we get I=V/R. So no matter how large of a value R can be (using resistance equivalence we can make it very large by putting a bunch of resistors in a row) the theoretical value for I is never zero, albeit very very small.

# How do you use current electricity in a sentence?

Here are a few examples... - The electrical current is monitored. - The current of electricity is measured in volts. - The electrical current of telephone wiring is 82 volts. They may not be worded the same, but they have the same initial meaning.

# What is the unit used to express electric current called?

A, Amps or amperes. an ampere is equal to one coulomb/second (basically a LARGE set number of electrons flowing through a cross section per second) the cross section could be anything, a wire, an arm... akin to the cross section of a watermain.

# Why direct current is not used for transission of electricity through wires?

Two reasons: 1. Alternating current does not loose as much power over long distance. 2. Alternating current can be stepped up or down through transformers, allowing AC to be transmitted at high voltage (even less current loss) and then it can be stepped back down inside your home. For short distances and if there is no need to step up or down, DC is fine.

# Can magnetism be used to direct an electric current?

Yes - CRT TV's and monitors do just that - using magnetic deflection to send the electrons to the screen to give an image.

# Why is direct current used for mains electricity?

We're deeply intrigued to know where the questioner resides, and from what experience this question arises. We know of no location in the world, and no small-scale situation, where direct current is preferred for the mains supply.

# Why alternating current is use for electrical system?

The transmission of electrical energy requires very high voltages (for a given load, the higher the supply voltage, the lower the load current). To increase/reduce these voltages, you need transformers. Transformers are AC machines; they do not work with DC.

# What is difference between positive current and negative current which current is used for generation of electricity?

Positive and negative are just directions. In AC the current changes direction 60 times a second. It is all the same.

# What is frequency of electric current used in your houses?

60 Hz in the Americas except Argentina, Saudi Arabia and part ofJapan, 50Hz in Europe, Africa, the rest of Japan, Argentina, Russia, theFar East and Oceania.

# Can you use the solution electric current to determine if it is an ancid or base?

In order to determine whether it is an acid or base you will first have to check the measurements of hydronium. This can found in the pH concentration.

# Which nuclear reaction is currently used to generate electricity?

It is a lot more complicated than this, but to give you an example, here is one nuclear reaction that is used to generate electricity. 235 U + neutron --> 236 U --> 89 Kr + 144 Ba + 3 neutrons + 177 MeV

# What is the abbreviation used to represent a unit of electrical current?

A Answer The SI unit for electric current is the ampere , whose symbol (not 'abbreviation') is A . The ampere is defined in terms of the resulting force between two current-carrying conductors, due to their magnetic fields.

# How is current electricity used by humans?

Current electricity is used by many humans. It's used to power things up such as, lamps, games, electrical devices and more. PEACE!!!!

# What is electrical symbol is used to represent current?

The electrical symbol for a continuous or r.m.s. current is an italic, upper-case, letter I . The symbol for an instantaneous value of current is an italic, lower-case, letter i . The symbol for its SI unit of measurement, the ampere , is an upright, upper-case, letter A .

# What is used for measuring electric current?

ammeter ...the branch in which current is to be measure..ammmeter is connected in series in that branch..

# What is the current standard electrical systems used in cars?

The current standard is 12 volt DC. As far as I know this is common throughout the world.

# What instrument is used to detect electrical currents?

A magnetic compass can detect current, but you'll need an Ammeter to measure it. A galvanometer can detect current ~ but you'll need an Ammeter to measure it.

# Why is an AC current system used in a domestic electrical supply?

Alternating current (AC) is easier to transmit over long distances than is direct current (DC).

# What device uses the voltage in an electrical current?

A voltage , or potential difference , is what causes current to flow through a circuit. So all devices (called 'loads') require a voltage applied to them.

# Is anememomete using for electrical current?

Anemometers, employed for measurement of wind speed, often take thefamiliar form of the spinning cups or a propellor-like windmill,but can indeed also use electrical current as one measurementmethod. With these hot-wire anemometers, measured changes incurrent, voltage or temperature can be used to accurately andquickly derive wind speed.

# Can you create a static electric charge using an electric current?

Yes. As a matter of fact, a common electronic component called a capacitor works because of this very principle.

# How does a wire EDM use an electric current to cut metals?

EDM works by creating thousands of sparks. The sparks melt or vaporize the material instead of cutting it. This process works best on non-ferrous metals, such as steel.

# What is the metric unit used to measure electric currents?

an electric current is from a thunder storm, and by that i mean the capacity is the fact that ellie woody is a poo face

# Why does an electric motor uses direct current?

Only a DC motor uses direct current, and the reason is that it isthe only supply available. There are also plenty of AC motors used when there is an AC supply. DC tends to be used for low-power devices like fans in electronicequipment.