Physics Current Electricity Electric Conduction, Ohm's Law, Electric Current, Potential Deffrence MCQ (Single Correct)

A source of e.m.f. E = 15 V and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increases with time as i = 1.2 t + 3. Then, the total charge that will flow in first five second will be

A
10 C
B
20 C
C
30 C
D
40 C

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The correct answer is:
C

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