# Electrical Engineering - Voltage, Current and Resistance

### Exercise :: Voltage, Current and Resistance - General Questions

11.

A two-terminal variable resistor is known as a

 A. potentiometer B. thermistor C. rheostat D. wiper

Explanation:

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12.

Eight-tenths coulomb passes a point in 4 s. The current in amperes is

 A. 1.6 A B. 16 A C. 2 A D. 0.2 A

Explanation:

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13.

When the current is 2.5 A, how many coulombs pass a point in 0.2 s?

 A. 12.5 C B. 1.25 C C. 0.5 C D. 5 C

Explanation:

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14.

The colored bands for a 4,700 ohm resistor with a ten percent tolerance are

 A. yellow, violet, red, gold B. yellow, violet, orange, gold C. yellow, violet, red, silver D. orange, violet, red, silver

Explanation:

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15.

A material that does not allow current under normal conditions is a(n)

 A. insulator B. conductor C. semiconductor D. valence