Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET Physics): Questions 6 - 9 of 25

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 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: 6

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

MCQ▾

Question

A circular loop of area 0.01m 2 carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1 T. The torque acting on the loop is

Choices

Choice (4) Response

a.

Zero

b.

0.8 Nm

c.

0.01 Nm

d.

0.001 Nm

Question number: 7

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

MCQ▾

Question

Four wires each of length 2.0 meter are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statements are incorrect?

Four current carrying loops P, Q, R and S.

Four Current Carrying Loops P, Q, R and S.

Four wires each of length 2.0 meter are bent into four loops P, Q, R and S. loop S is the circularly shaped.

(1) Couple on loop P will be the highest

(2) Couple on loop Q will be the highest

(3) Couple on loop R will be the highest

(4) Couple on loop S will be the highest

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 8

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

MCQ▾

Question

Current i is carried in a wire of length L. If the wire is turned into a circular coil, the maximum magnitude of torque in a given magnetic field B will be,

Choices

Choice (4) Response

a.

Li2B4π

b.

L2iB4π

c.

LiB22

d.

Li2B2

Question number: 9

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

MCQ▾

Question

A circular coil has radius 4 cm and 20 number of turns carries a current of 3 ampere. It is placed in a magnetic field of intensity 0.5 weber/m 2. The magnetic dipole moment of the coil is, (take π=227)

Choices

Choice (4) Response

a.

0.45 ampere m 2

b.

0.3 ampere m 2

c.

0.6 ampere m 2

d.

0.15 ampere m 2

Sign In