Resistance and Power - General Questions

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Resistance and Power - General Questions

Good insulators:

A.	have few electrons in their outer shells
B.	have a large dielectric strength
C.	small
D.	have many electrons in the nucleus

Answer: Option B

Explanation:

No answer description available for this question

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

Explanation:

No answer description available for this question

The unit designator for resistance value is the:

A.	ampere
B.	ohm
C.	volt
D.	watt

Answer: Option B

Explanation:

No answer description available for this question

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:

No answer description available for this question

How is power dissipated in a resistor?

A.	by resistance
B.	by voltage
C.	by current
D.	by heat

Answer: Option D

Explanation:

No answer description available for this question.

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:

No answer description available for this question

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:

No answer description available for this question

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:

No answer description available for this question.

Resistance and Power - General Questions

Resistance and Power - General Questions

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