# Magnetic Effects of Current and Magnetism (NEET Physics): Questions 50 - 53 of 155

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 50

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

### Question

A short magnet of length 4 cm is kept at a distance of 20 cm to the east of a compass box such that is axis is perpendicular to the magnetic meridian. If the deflection produced is 45°, find the pole strength (H = 30 Am -1)

### Choices

Choice (4) Response

a.

17.7 Am

b.

37.7 Am

c.

44.2 Am

d.

27.7 Am

## Question number: 51

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

### Question

A north pole of strength 50 Am and South Pole of strength 100 Am are separated by a distance of 10 cm in air. Find the force between them.

### Choices

Choice (4) Response

a.

20 x 10 -6 N

b.

25 x 10 -3 N

c.

30 x 10 -18 N

d.

50 x 10 -3 N

## Question number: 52

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

### Question

In a moving coil galvanometer, the deflection of the coil θ is related to the electrical current i by the relation

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 53

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

MCQ▾

### Question

The straight long conductors AOB and COD are perpendicular to each other and carry current and . The magnitude of the magnetic induction at point P at a distance ‘a’ from the point O in a direction perpendicular to the plane ACBD is

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page