Question

The current in a coil change from 0 to 2A in 0.05s. If the induced emf in 80V , the self inductance of the coil is:
a) 1H b) 0.5H c) 1.5H d) 2H

Answer 1

Answer:

i thik 2H will be the answer

Explanation:

using foemula of emf

e = Ldi/dt

given that e= 80v

change in current=2A

time= 0.05sec then put these value in formula to get answer