Question

(i) If 5 ampere current flows through a conductor for 4 seconds, find the amount of charge flown.
(ii) If the charge calculated above is transferred at a potential difference of 3 volts, calculate the work done.

Answer 1

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Answer 2

Charge = 20 C

Work = 60 J

Explanation:

(i) C = A * t where C is charge in coulombs, A is current in Amperes and t is time in seconds.

C = 5 * 4 = 20 Coulombs

(ii) Charge = 20 C, Potential difference = 3 V

Potential difference is the work done per unit charge.

Potential difference = Work / charge

3 = Work / 20

Work = 3 * 20 = 60 Joules.