# Magnetic Effects of Current and Magnetism (JEE (Based on NTA Guidelines-IIT Engg.) Advanced Physics): Questions 1 - 3 of 20

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## Question number: 1

» Magnetic Effects of Current and Magnetism » Ampere's Law

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Appeared in Year: 2011

MCQ▾

### Question

A boat is moving due east in a region where the earth’s magnetic field is due north and horizontal. The boat carries a vertical aerial long. If the speed of the boat is , the magnitude of the induced emf in the wire of aerial is: (AIEEE)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

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Appeared in Year: 2013

MCQ▾

### Question

Two non – conducting solid spheres of radii and , having uniform volume charge densities and respectively, touch each other. The net electric field at a distance from the centre of the smaller sphere, along the line joining the centers of the sphere, is zero. The ratio can be:

### Choices

Choice (4) Response

a.

4

b.

c.

d.

Both b. and a. are correct

## Question number: 3

» Magnetic Effects of Current and Magnetism » Ampere's Law

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Appeared in Year: 2013

MCQ▾

### Question

A steady current flows along an infinitely long hollow cylindrical conductor of radius . This cylinder is placed coaxially inside an infinite solenoid of radius . The solenoid has turns per unit length and carries a steady current . Consider a point at a distance from the common axis. The correct statement (s) is (are):

### Choices

Choice (4) Response

a.

In the region , the magnetic field is along the common axis.

b.

In the region , the magnetic field is non – zero.

c.

In the region , the magnetic field is non – zero.

d.

Both b. and c. are correct

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