EASY
12th ICSE
IMPORTANT
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The current through a 1 mH coil drops from 5 A to 3 A in 10-3 s. The emf developed in the coil is :

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Important Questions on Electromagnetic Induction

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 4
When the current in a coil changes from 8 A to 2 A in 3×10-2 Second, the emf induced in the coil is 2 V The self inductance of the coil, in millihenry, is :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 5
The self-inductance of a straight conductor is :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 6
A coil and a bulb are connected in series with a 5 V DC source. When a soft-iron core is inserted in the coil, the light emerging from the bulb :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 7
A solenoid L and resistor R are connected in series to a battery through a switch. When switch is put on, a current I flowing through it varies with time t as shown in which of the graphs given below :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 1
What is the dimensional formula for induced emf?
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 2

Write factor on which induced emf will depend.

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 3
Does Lenz's law hold for an open circuit ?
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 4
Write the dimensional formula of coefficient of self-induction.