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

Answer: Option C

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

Answer: Option D

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

Answer: Option 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

Answer: Option C

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

Answer: Option A

Explanation:

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