# Electromagnetic Induction & Alternating Currents (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 33 - 37 of 124

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## Question number: 33

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

MCQ▾

### Question

An alternating voltage is connected to a 1 µF capacitor through an ac ammeter. The reading of the ammeter will be

### Choices

Choice (4) Response

a.

40 mA

b.

10 mA

c.

20 mA

d.

80 mA

## Question number: 34

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

MCQ▾

### Question

The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 V. Then the r. m. s value of voltage is

### Choices

Choice (4) Response

a.

56.5V

b.

70.7V

c.

84.8V

d.

101.3V

## Question number: 35

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

Assertion-Reason▾

### Assertion (Ꭺ)

An aircraft flies along the meridian, the potential at the ends of its wings will be the same.

### Reason (Ꭱ)

Whenever there is change in the magnetic flux e. m. f. induces.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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

## Question number: 36

» Electromagnetic Induction & Alternating Currents » Faraday's Law

MCQ▾

### Question

A copper disc of radius 0.1 m rotates about its center with 10 revolution per second in a uniform magnetic field of 0.1 T. The emf induced across the radius of the disc is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Passage

In the figure shown, the rod has a resistance R, the horizontal rails have negligible friction. Magnetic field of intensity B is directed perpendicular into the plane of paper. A cell of e. m. f. E and negligible internal resistance is connected between points a and b. The rod is initially at rest.

## Question number: 37 (1 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

After some time the rod will approach a terminal speed. The speed is,

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page