ElectroMagnetic InductionHard
Question
A coil of resistance 400 Ω is placed in a magnetic field. If the magnetic flux φ (wb) linked with the coil varies with time t (sec) as φ = 50 t2 + 4, the current in the coil at t = 2 sec is
Options
A.1 A
B.0.5 A
C.0.1 A
D.2 A
Solution
|emf| = 
= 100t
at t =, emf = 200 V
⇒ i =
= 0.5 A
= 100tat t =, emf = 200 V
⇒ i =
= 0.5 ACreate a free account to view solution
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