Question

A coil of resistance 400Ω is placed in magnetic field. If the magnetic flux ϕ(Wb) linked with the coil varies with time t(s) as  ϕ=50t² + 4 . The current in the coil at t = 2 s is :–

(a) 0.5 A 

(b) 0.1 A 

(c) 2 A 

(d) 1 A

Answer 1

Correct option (a) 0.5 A 

Explanation: