Current 1 of 8.4 A runs for 240 seconds and then stops. Current 2 is 10.5 A.How long does current 2 have to run to deliver the same amount of charge as current 1?

Charge is current multiplied by time, so current 1 delivers 8.4 A × 240 s = 2,016 C. For current 2, the time needed is 2,016 C ÷ 10.5 A = 192 s. The correct choice is B, 192 s.

AI-written and checked against the verified answer.