resistance-and-power electronics question and answers -Page 8

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Resistance and Power problems

1. A 12-volt battery is delivering 3 amperes to a resistor. The power dissipated by the resistor is 4 watts.
Options
A. True
B. False

Correct Answer: False

2. Fixed-value resistors can internally short-circuit.
Options
A. True
B. False

Correct Answer: False

3. A load resistance is the resistance of the load.
Options
A. True
B. False

Correct Answer: True

4. Resistance is inversely proportional to current.
Options
A. True
B. False

Correct Answer: True

5. A resistor with a value of 9.9 kΩ 10% could have a value between 8.91 kΩ and 10.89 kΩ.
Options
A. True
B. False

Correct Answer: True

6. An ohmmeter uses an internal battery to measure the resistance of a resistor.
Options
A. True
B. False

Correct Answer: True

7. Resistivity is measured in cmil.?/ft.
Options
A. True
B. False

Correct Answer: True

8. One horsepower is 746 watts.
Options
A. True
B. False

Correct Answer: True

9. A rheostat is not a type of variable resistor.
Options
A. True
B. False

Correct Answer: False

10. If 500 mA is flowing through a 10 Ω resistor, the wattage rating of the resistor should be 2 watts.
Options
A. True
B. False

Correct Answer: False

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