Electronics - Resistance and Power

Exercise :: Resistance and Power - General Questions

56. 

After a lamp is turned on, its filament resistance will change to become:

A. less resistive
B. cooler
C. brighter
D. more resistive

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

57. 

Wirewound resistors are usually used in circuits that have:

A. high current
B. negative temperature coefficients
C. low power
D. high voltage

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

58. 

How is power dissipated in a resistor?

A. by resistance
B. by voltage
C. by current
D. by heat

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

59. 

Resistance in a circuit is:

A. opposition to current
B. opposition to voltage
C. the same as current
D. the same as voltage

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

60. 

The unit designator for resistance value is the:

A. ampere
B. ohm
C. volt
D. watt

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.