Magnetism and Electromagnetism - Interview Questions | Exam2Win

Ready to test your skills?

Take a timed mock test specifically for Magnetism and Electromagnetism.

Start Mock Test

51. Which of the following materials are dia-magnetic ?

A. Silver

B. Copper

C. Silver and copper

D. Iron

Explanation:

52. If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity

A. less than that of disc but in opposite direction

B. equal to that of disc and in the same direction

C. equal to that of disc and in the opposite direction

D. less than that of disc and in the same direction

Explanation:

53. A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

A. M

B. M/2

C. 2 M

D. M/4

Explanation:

54. A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the mag netic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil ?

A. Decreases

B. Increases

C. Remains same

D. First increases and then decreases depending on the depth of iron in�sertion

Explanation:

55. The commonly used material for shielding or screening magnetism is

A. copper

B. aluminium

C. soft iron

D. brass

Explanation:

« Prev 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Next »