# Electromagnetic Induction & Alternating Currents-Induced EMF and Current (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 10 - 12 of 12

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## 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: 10 (2 of 2 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.

## Question number: 11

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Assertion-Reason▾

### Assertion (Ꭺ)

The induced e. m. f. and current will be same in two identical loops of copper and aluminum, when rotated with same speed in the same magnetic field.

### Reason (Ꭱ)

Induced e. m. f. is proportional to rate of change of magnetic field while induced current depends on resistance of wire.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

## Question number: 12

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

A current increases uniformly from zero to one ampere in 0.01 second, in a coil of inductance 10 mH. The induced e. m. f. will be –

### Choices

Choice (4) Response

a.

3 V

b.

4V

c.

1 V

d.

2 V

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