A wire of given material having length l of cross-section A
has a resistance of 4 ohm . What would be the resistance of another wire
of the same material having length l/2 and area of cross-section 2A?
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9
Answer:
Refer the attached picture.
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Answered by
2
Answer:
1 ohm
Explanation:
R=rho l/A
R`=rho I/2/2A
=rho I/4A
=1/4 rho I/A
=1/4 R
=1/4 × 4
=1 ohm
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