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The primary of a transformer has 100 turns and its secondary has 200 turns. If the voltage at the primary is 100V100 V, determine the voltage at the secondary.

a.

50V50 V

b.

100V100 V

c.

200V200 V

d.

400V400 V

The energy in the nucleus of atoms produced heat which can be used to generate

a.

Mechanical energy

b.

Electrical energy

c.

Potential energy

d.

Kinetic energy

Which of the following cases cannot produce total internal reflection?

a.

glass to water

b.

kerosene to air

c.

air to water

d.

water to ice

Which of the following are true of atoms?

a.

Atoms are indestructible

b.

The number of protons equals the number of electrons

c.

Atoms of different substances have different weights

d.

All of the above

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