Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 57

EASY

NEET

IMPORTANT

Earn 100

A $12 V$ battery connected to a $6 Ω, 10 H$ coil through a switch drives a constant current in the circuit. The switch is suddenly opened. Assuming that it took $1 ms$ to open the switch, calculate the average induced emf across the coil.

Important Questions on Electromagnetic Induction

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 58

A copper rod of length

0.5 m

rotates about one of its ends at angular velocity of

32 radian s^{- 1}

in a uniform magnetic field of induction

0.4 Wb m^{- 2},

the plane of rotation being at right angles to the field. Find the emf developed between the ends of the rod.

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 59

A metallic wire bent in the form of a semicircle of radius

0.1 m

is moved in a direction parallel to its plane, but perpendicular to a magnetic field

B = 20 mT

with a velocity of

10 {ms}^{- 1} .

Find the emf induced in the wire.

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 60

An air-cored solenoid is of length

0.3 m .

Area of cross section

1.2 \times 10^{- 3} m^{- 2}

and has

2500

turns. Around its central section, a coil of

350

turns is wound. The solenoid and the coil are electrically insulated from each other. Calculate the emf induced in the coil, if initial current of

3 A

in the solenoid is reversed in

0.25 \sec .

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 1

In which of the following case induced emf will be minimum? (Where

v

is velocity vector and

B

is magnetic field vector)

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 2

The magnitude of induced

e . m . f .

in conducting loop can be increased by

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 3

Electrical inertia of coil is

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 4

The coefficient of self inductance $(L)$ of two coils having coefficient of self inductance $L_{1}$ and $L_{2}$ respectively are connected in series as shown in figure is equal to

Question Image

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 5

Two solenoids of same cross-sectional area

A

, having ratio of their lengths and ratio of number of turns equal to

2 : 3

and

1 : 2

respectively. The ratio of self-inductance of two solenoids is