Resistance and Power Questions and Answers

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Showing 10 of 72 questions
Q51
How is power dissipated in a resistor?
  • A by resistance
  • B by voltage
  • C by current
  • D by heat
Answer: Option D
Q52
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
Q53
The unit designator for resistance value is the:
  • A ampere
  • B ohm
  • C volt
  • D watt
Answer: Option B
Q54
One ampere of current flowing through one ohm of resistance is equal to:
  • A 1 horsepower
  • B 1 Btu
  • C 1 watt
  • D 1 joule
Answer: Option C
Q55
Good insulators:
  • A have few electrons in their outer shells
  • B have a large dielectric strength
  • C have a small breakdown voltage
  • D have many electrons in the nucleus
Answer: Option B
Q56
A 12-volt battery is delivering 3 amperes to a resistor. The power dissipated by the resistor is 4 watts.
  • A TRUE
  • B FALSE
Answer: Option B
Q57
Resistance limits the flow of current.
  • A TRUE
  • B FALSE
Answer: Option A
Q58
A digital voltmeter can be used to measure resistance.
  • A TRUE
  • B FALSE
Answer: Option A
Q59
Carbon composition resistors are the most common and the least expensive type of fixed-value resistor.
  • A TRUE
  • B FALSE
Answer: Option A
Q60
In a resistive circuit, if the voltage increases, the current will increase.
  • A TRUE
  • B FALSE
Answer: Option A

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