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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