EASY
12th ICSE
IMPORTANT
Earn 100

The self-inductance of a coil is 10 H. Find the rate of change of current in the coil, if an induced emf of 120 V is developed in it.

Important Questions on Electromagnetic Induction

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 25
A coil has a self-inductance of 0.05 henry. Find magnitude of the emf induced in it when the current flowing through it is changing at the rate 100 As-1.
MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 26
A coil has an inductance of 4.0 H. Find the emf induced, if a current of 2.7 A in it is stopped within 1-35 s.
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 27
If the current in the primary coil of a transformer is reduced from 0.5 A to zero in 1 ms, an emf of 500 V is induced across the secondary. Calculate the coefficient of mutual induction M.
MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 28
The current in the primary of a transformer drops from 5 to 3 A in 2 s. If the mutual inductance between the two coils is 0.16 H, then calculate the induced emf in the secondary.
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 29
The mutual inductance between two coils is 0.15 H. If a current of 20 A in the primary coil is cut off in 0.05 s, find the emf induced in the secondary coil. If the secondary coil has 60 turns, then find the flux-change in it.