JEE Main 2022 Physics question
Magnetic flux (in weber) in a closed circuit of resistance 20 varies with time t(s) as . The magnitude of the induced current at t = 0.25 s will be mA.
Answer: 250
Solution
The induced emf is = |16t − 9| = |16(0.25) − 9| = 5 V. So A = 250 mA.