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:
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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:
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58. |
How is power dissipated in a resistor? |
A. |
by resistance | B. |
by voltage | C. |
by current | D. |
by heat |
Answer: Option D
Explanation:
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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:
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60. |
The unit designator for resistance value is the: |
Answer: Option B
Explanation:
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