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Voltage and Current - Technical MCQs

Q1:

If 40 C of charge flow past a point in 20 s, what is the current?

A 2 A

B 0.5 A

C 20 A

D 40 A

ANS:A - 2 A

Current is the rate of flow of charge. So, Current = Charge/Time. Coulombs = 40 C. Time = 20 s. 40c/20s = 2 A.