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. |
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
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 |
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. |
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 |