what is electric current?

Asked by Nitin | 9th Mar, 2017, 11:08: AM

Expert Answer:

The current is the rate of flow of charge across a cross-section which is normal to the direction of flow of current.
 begin mathsize 12px style Current space left parenthesis straight I right parenthesis space equals space fraction numerator Charge space left parenthesis straight Q right parenthesis over denominator Time space left parenthesis straight t right parenthesis end fraction end style
It is a scalar quantity.
Its SI unit is ampere (A). It is given as
begin mathsize 12px style Unit space of space straight I space equals space fraction numerator Unit space of space straight Q over denominator Unit space of space straight t end fraction
rightwards arrow straight A equals straight C over straight s end style
Thus, current is one ampere if the rate of flow of charge is one coulomb per second.
 

Answered by Yashvanti Jain | 9th Mar, 2017, 06:42: PM