what is current?, Physics

Assignment Help:

A simple electric circuit, where current is represented by the letter i. The relationship among the voltage (V), resistance (R), and current (I) is V=IR; this is called as Ohm''s Law.

An electric current is a flow of electric charge by an electrical conductor. Electric charge flows when there is voltage present across a conductor.
In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons like as in a plasma.

The SI unit for measuring an electric current is the ampere, which is the flow of electric charges by a surface at the rate of one coulomb per second. Electric current can be measured by using an ammeter.
Electric currents cause many effects, notably heating, but also induce magnetic fields, which are widely used for inductors, motors, and generators.


Related Discussions:- what is current?

Radiative transmission, Earth is losoing heat in order balance the input ou...

Earth is losoing heat in order balance the input outpout . But where is going that heat since there is nothing out to get it. Billions of stars are loosing heat the same way and so

Physica;lchemistry, what happens when a melt caontaining 1%ag with 99%pb

what happens when a melt caontaining 1%ag with 99%pb

Car Accident, How do I find the momentum, velocities and energy of both veh...

How do I find the momentum, velocities and energy of both vehicles as they leave the impact point, the energy transferred during the collision and the momentum and energy of the ve

Work-energy theorem, In whole analog to the work energy theorem for the tra...

In whole analog to the work energy theorem for the translator motion, it might be stated for rotational motion as:  Δ W rot =  K rot The net rotational work given by the force

PHYSICAL CHEMISTRY, Calculate the density of sodium metal. The length of th...

Calculate the density of sodium metal. The length of the body-centered cubic unit cell is 4.24 A.

Define railway tanker, Define Railway Tanker? A long, cylindrical tank ...

Define Railway Tanker? A long, cylindrical tank is placed on a carriage that is able to slide without friction on. The mass of the empty tanker is M=180 kg at first the tank is

Couple, state the conditions under which two forces form a couple and give ...

state the conditions under which two forces form a couple and give an example of couple

Describe the michelson morleys experiment, Describe the Michelson Morley's ...

Describe the Michelson Morley's experiment and explain its negative result. What is "Length Contraction" and "Time Dilation" in relativistic mechanics? Explain.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd