Q236
Let us consider a copper wire having radius r and length l. Let its resistance be R. If the radius of another copper wire is 2r and the length is l/2 , then the resistance of this wire will be
Let us consider a copper wire having radius r and length l. Let its resistance be R. If the radius of another copper wire is 2r and the length is , then the resistance of this wire will be
A.
R
B.
2R
C.
D.
Answer
Answer: Option D
Solution
Answer: Option D
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