# Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 18 - 23 of 26

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## Question number: 18

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

### Question

A charged particle is released from rest in a region of steady uniform electric and magnetic fields which are parallel to each other. The particle will move in a

### Choices

Choice (4) Response

a.

Cycloid

b.

Circle

c.

Helix

d.

Straight line

## Passage

A wire carrying a 10 A current is bent to pass through sides of a cube of side 10 cm as shown in figure. A magnetic field T is present in the region. Then, find

## Question number: 19 (1 of 3 Based on Passage) Show Passage

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

### Question

The net force on the loop

### Choices

Choice (4) Response

a.

F net = 0

b.

F net = (0.36k) N

c.

F net = (0.3i + 0.4k) N

d.

F net = (0.1i-0.2k) N

## Question number: 20 (2 of 3 Based on Passage) Show Passage

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

### Question

The net torque on the loop is,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 21 (3 of 3 Based on Passage) Show Passage

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

### Question

The magnetic moment vector of the loop.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 22

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

Assertion-Reason▾

### Assertion (Ꭺ)

Torque on the coil is maximum, when coil is suspended in a radial magnetic field.

### Reason (Ꭱ)

The torque tends to rotate the coil on its own axis.

### Choices

Choice (4) Response

a.

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

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

## Question number: 23

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

### Question

A rectangular loop carrying a current i is placed in a uniform magnetic field B, The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page