What would you like to do?
Why is the letter I used for electrical current?
An ammeter is used to measure an electric current. Alternatively, you can use a multimeter, set to an appropriate current range.
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 co…nvention is to use j as the square root of -1 instead when working with complex numbers in the analysis of AC circuits.
If the question means "What does electricity do for us?" then we could mention lighting, heating, cookers, refrigerators, telephones and cellphones, radios, TVs, compute…rs 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.
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 mo…tor.
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).
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.
ammeter, which is understood as an amp meter
copper and aluminium wires are usually used for electricity transmission because copper and aluminium are good conductors of electricity . They are easily available .
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.
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.
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 volta…ges, you need transformers. Transformers are AC machines; they do not work with DC.
Current electricity is used by many humans. It's used to power things up such as, lamps, games, electrical devices and more. PEACE!!!!
Amperes (Amps) which is I in the equation I=V/R
Yes, all batteries provide direct current.
Yes. As a matter of fact, a common electronic component called a capacitor works because of this very principle.