New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>Problems For Practice>Q 14

EASY

12th CBSE

IMPORTANT

Earn 100

A conducting wire of $100$ turns is wound over $1 cm$ near the centre of a solenoid of $100 cm$ length and $2 cm$ radius having $1000$ turns. Calculate the mutual inductance of the two coils.

Important Questions on Electromagnetic Induction

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>Problems For Practice>Q 15

A solenoid has

2000

turns wound over a length of

0.3 m

. The area of cross-section is

1 .2 \times 10^{- 3} m^{2}

. Around its central section, a coil of

300

turns is closely wound. If an initial current of

2 A

is reversed in

0.25 s

, find the emf induced in the coil.

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>Problems For Practice>Q 16

Calculate the mutual inductance between two coils if a current

10 A

in the primary coil changes the flux by

500 Wb

per turn in the secondary coil of

200

turns. Also, determine the induced emf across the ends of the secondary coil in

0.5 s

.

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 1

What is the basic cause of induced emf?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 2

Will an induced emf develop in a conductor, when moved in a direction parallel to the magnetic field?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 3

A train is moving with uniform speed from north to south. Will any induced emf appear across the ends of its axle?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 3

A train is moving with uniform speed from north to south.Will any induced emf appears across the end of its axle? Will the answer be affected if the train moves from east to west?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 4

Does the change in magnetic flux induce emf or current?

EASY

12th CBSE

IMPORTANT

New Simplified Physics (Vol 1) For Class 12>Chapter 6 - Electromagnetic Induction>VERY SHORT ANSWER CONCEPTUAL PROBLEMS>Q 5

Induced emf is also called back emf. Why?