Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 10 - 13 of 32

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Question 10

Question MCQ▾

A ring of radius R, made of an insulating material carries a charge Q uniformly distributed on it. If the ring rotates about the axis passing through its center and normal to plane of the ring with constant angular speed , then the magnitude of the magnetic moment of the ring is

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 11

Question MCQ▾

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B = 0.2Wb/m2 . The torque acting on the coil is

A Square Coil Placed in Magnetic Field

Choices

Choice (4)Response

a.

0.32 Nm tending to rotate the side AD out of the page

b.

0.0032 Nm tending to rotate the side AD out of the page

c.

0.32 Nm tending to rotate the side AD into the page

d.

0.0032 Nm tending to rotate the side AD into the page

Edit

Question 12

Question MCQ▾

The radius of a circular loop is r and a current i is flowing in it. The equivalent magnetic moment will be

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 13

Question MCQ▾

A rectangular coil of size 20 cm x 20 cm has 100 turns and carries a current of 1 A. It is placed in a uniform magnetic field B = 0.5 T with the direction of magnetic field parallel to the plane of the coil. The magnitude of the torque required to hold this coil in this position is

Choices

Choice (4)Response

a.

2 Nm

b.

200 Nm

c.

10 Nm

d.

Zero

Edit