Question

Consider the LR circuit shown in the figure. If the switch S is closed at t = 0 then the amount of charge that passes through the battery between t = 0 and t = L/R is :

(1)  7.3 EL/R²

(2)   2.7 EL/R²

(3)  EL/7.3 R²

(4)  EL/2.7 R²

Answer 1

Correct option (4)  EL/2.7 R²

Explanation: