CUET and UG exam CUET UG 2025 Mock Test Series Physics Electromagnetic Induction and Inductance Faraday’s Law of Induction
A long solenoid of radius R carries a time (t) dependent current I(t) = I0t(1 − t). A ring of radius 2R is placed coaxially near its middle. During the time instant 0 ≤ t ≤ 1, the induced current (IR) and the induced EMF (VR) in the ring changes as:
1
Direction of IR remains unchanged and VR is maximum at t = 0.5
2
Direction of IR remains unchanged and VR is zero at t = 0.25
3
At t = 0.5 direction of IR reverses and VR is zero
4
At t = 0.25 direction of IR reverses and VR is maximum