# Electrical Engineering - Magnetism and Electromagnetism

### Exercise :: Magnetism and Electromagnetism - General Questions

16.

The direction of a magnetic field within a magnet is

 A. from south to north B. from north to south C. back to front D. front to back

Explanation:

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17.

When the north poles of two bar magnets are brought close together, there will be

 A. no force B. a downward force C. a force of attraction D. a force of repulsion

Explanation:

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18.

The ability of a material to remain magnetized after removal of the magnetizing force is known as

 A. permeability B. reluctance C. hysteresis D. retentivity

Explanation:

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19.

The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is

 A. 1.7 mA B. 16 mA C. 12 mA D. 120 mA

Explanation:

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20.

The induced voltage across a stationary conductor in a stationary magnetic field is

 A. zero B. reversed in polarity C. increased D. decreased