Question

a potential difference of 10 volt is applied across a conductor of thousand ohm the number of electrons flowing through the conductor in 300 second is

Answer 1

I=V/R
I=10/1000
I=0.01 A

Q=I×t
Q=0.01×300
Q=3 C

Answer 2

$\huge{ \mathcal{ \purple{\ boxed {Solution \: :-}}}}$

10V and 1.5A,

when multiplied, gives us the power

=: 15W

Energy is power x time.

The time given is 120 seconds,

and it so happens there is a unit called

Joule that matches Watt-Seconds.

15W x 120 sec = 1800 Ws = 1800 Joules.

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