Electronics - Resistance and Power
Exercise :: Resistance and Power - General Questions
51. |
If a metallic conductor has a positive temperature coefficient of resistance, then: |
A. |
as temperature increases, resistance decreases | B. |
as current increases, resistance decreases | C. |
as voltage increases, current increases | D. |
as temperature increases, resistance increases |
Answer: Option D
Explanation:
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52. |
What value of a 1.3 k resistor as measured by a digital voltmeter would be considered within tolerance? |
Answer: Option B
Explanation:
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53. |
If a calculator display was "0.00263," what would this answer be in percent? |
Answer: Option B
Explanation:
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54. |
A 33 k resistor with a 20% tolerance checks out as ok with which of the following ohmmeter readings? |
A. |
26400 ohms | B. |
24183 ohms | C. |
6600 ohms | D. |
39970 ohms |
Answer: Option A
Explanation:
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55. |
For P = V2/R, a decrease in resistance should produce: |
A. |
a decrease in power | B. |
an increase in ohms | C. |
an increase in power | D. |
a decrease in current |
Answer: Option C
Explanation:
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