Physics Review Question

Unit: Electricity and Magnetism
Year: 1991 Question#: 59
Question: If the diameter of a wire were to increase, its electrical resistance would

(1 ) decrease
(2 ) increase
(3 ) remain the same
(4 ) type the fourth answer here

What is this question really asking?




Explanation by: Megan C.
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Answer 1
Decrease

CORRECT

If the diameter of the wire decreases, the electrical resistance will decrease because there is more space for which the electricity can flow. This causes a decrease in electrical resistance. return to top























Answer 2
Increase

INCORRECT

If the diameter of the wire increases the electrical resistance will decrease. The increase in diameter would not cause an increase in electrical resistance. return to top



























Answer 3
Remain the same

INCORRECT

If the electrical resistance remained the same, the diameter of the wire would not change. return to top



















































What's this question really asking?

If you know what an increase or decrease in the diameter of a wire does to it's electrical resistance. return to top