Solveeit Logo
Login

Question

Physics Question on Current electricity

Find the current drawn from the battery just after the switch is closed

A

F2R\frac{F}{2 R}

B

2ER\frac{2 E}{R}

C

ER\frac{ E}{R}

D

2E3R\frac{ 2E}{3R}

Answer

ER\frac{ E}{R}

Explanation

Solution

Before the switch is closed, there is no voltage or current across either the resistor or the inductor, when the switch is first closed, the current through the inductor is zero, because it cannot change instantaneously.
So, i=ERi=\frac{E}{R}