A current of 5 A exists in a 10 aum resistor for 4 minutes . How many coulombs pass through any cross section of the resistor in this time

Question

A)200

B)12.5

C)1.6×10^-6

D)7.5×10^21

E)1.2×10^3

Answer 1

Current = charge per unit time, hence, charge flowing through any given cross-section of the resistor in 4 minutes is 5 A (Coulomb/sec) * 240 (time in sec) = 1200 Coulombs. E) is the right answer.