MCQ Question...
Q) A copper of length 'l' and radius 'r' has resistance 'R'. The resistance of another copper wire of twice the length and half the radius will be :
A) R. B) 2R.
C) 4R. C) 8R.
Answers
Answered by
1
Answer:8R
R=resistivity*length/area
Explanation:
Answered by
1
Answer:
R. resistivity ×length/area
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