Question

In a closed circuit of resistance 10Ω, the linked flux varies with time according to relation ϕ=6.t2-5t+1.At t=0.25 second, the current (in Ampere) flowing through the circuit is

Answer 1

is this helpful for u???!

Answer 2

I tried using two different methods and my answer is 0.2A

But since the answer in my books is given 1.2A can anybody confirm and tell me know.