# Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 24 - 26 of 26

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: 24

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

MCQ▾

### Question

wire of length L has magnetic moment M. It is bent in to semicircular arc. The new magnetic moment is,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 25

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

MCQ▾

### Question

A current of 30 A is flowing in a vertical straight wire. If the horizontal component of earth’s magnetic field is 2 x 10 -5 tesla then the distance of null point from wire is –

### Choices

Choice (4) Response

a.

0.3 m

b.

0.3 cm

c.

0.3 mm

d.

0.9 m

## Question number: 26

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

Appeared in Year: 2017

MCQ▾

### Question

A long solenoid of diameter has turn per meter. At the centre of the solenoid, a coil of turns and radius is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to from in . If the resistance of the coil is the total charge flowing through the coil during this time is –

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page