Test SeriesFree PYQsExamsPricing

JEE Main 2022 Physics question

PhysicsElectromagnetic InductionJEE Main 2022

A 10 , 20 mH coil carrying constant current is connected to a battery of 20 V through a switch. Now after switch is opened current becomes zero in 100 . The average e.m.f. induced in the coil is V.

Answer: 400

Solution

The initial current is I = 20/10 = 2 A, so the initial flux is 10^{-3}$ × 2 = 4 ×

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-025308