Question

If 7.5x10²° no of electrons flow through the Cross section of a wire in 2 mins , find the current through the wire.Given , charge of electron =1.6x10-¹9C

Answer 1

Answer:

Charge = Current×time

Amount of charge flowing = 7.5×10²°×1.6×10-¹9 = 142.5 C

then

Current = q/t = 142.5/2×60 = 1.89 A answer

HOPE IT HELPS.....