# Electromagnetic Induction & Alternating Currents (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 51 - 54 of 124

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## Question number: 51

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

MCQ▾

### Question

A conducting wire in the shape of Y with each side of length is moving in a uniform magnetic field B, with a uniform speed v as shown in fig. The induced emf at the two ends X and Y of the wire will be-

### Choices

Choice (4) Response

a.

Zero

b.

2 Blv sin (θ/2)

c.

2 Blv

d.

2 Blv cos (θ/2)

## Question number: 52

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

### Question

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be

### Choices

Choice (4) Response

a.

Maximum in situation A

b.

Maximum in situation C

c.

Maximum in situation B

d.

The same in all situations

## Question number: 53

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

A solenoid has an inductance of 50 mH and a resistance of 0.025 Ω. If it is connected to a battery, how long will it take for the current to reach one half of its final equilibrium value?

### Choices

Choice (4) Response

a.

1.38 sec

b.

1.38 ms

c.

0.23 sec

d.

1.34 sec

## Passage

In Figure given, there is a conducting loop ABCDEFA, of resistance per unit length placed near a long straight current-carrying wire. The dimensions are shown in the figure. The long wire lies in the plane of the loop. The current in the long wire varies as I = I 0 t.

## Question number: 54 (1 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

The heat produced in the loop in time t is

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page