Question

Flux f (in weber) in a closed circuit of resistance 10 ohm varies with time t (in sec) according to the equation:

f = 6t² – 5t + 1

What is the magnitude of the induced current at t = 0.25 sec?

• A. 1.2 A
• B. 0.8 A
• C. 0.6 A
• D. 0.2 A

Answer 1

Answer: (D)

0.2 A

Answer 2

e = – $\frac { \mathrm { d } \phi } { \mathrm { dt } }$ Ž i =