Magnetic Field - Questions & Answers | Exam2Win

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1. The permeability of free space is

A. 1 H/m

B. 0

C. 4π  10-7 H/m

D. 4π  107 H/m

Explanation:

2. The magnetic flux

A. is a scalar quantity

B. is a vector quantity

C. denotes the amount of the force on a north pole

D. is the magnetic moment of a bar magnet

Explanation:

3. Force of the attraction between two poles placed in vacuum

A. decreases as the pole strength increases

B. increases with decrease in distance

C. decreases with decrease in distance

D. increases with decrease in pole strength

Explanation:

4. When a magnet is dipped in iron filings, the fillings

A. cling throughout the magnet

B. cling to the magnet at the ends only

C. cling to the magnet at its center only

D. do not cling to the magnet

Explanation:

5. Ampere-meter is the unit of

A. magnetic moment

B. pole strength

C. electric potential

D. magnetic potential

Explanation:

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