Single Answer MCQ
Q-00019346
If two wires of the same material are identical in length but one has twice the cross-sectional area, how does their resistance compare?
1
The thicker wire has higher resistance
2
The resistance is the same
3
The thicker wire has lower resistance
4
Cannot be determined
Answer and Solution
Answer
C. The thicker wire has lower resistance
Solution:
Resistance is inversely proportional to the area of cross-section. Thus, if one wire has twice the area, it will have half the resistance compared to the thinner wire.
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