Physics, asked by rahults2003, 2 months ago

3. The resistance of a wire is 20 ohms. It
is so stretched that the length becomes
three times, then the new sesistance of
the wire will be
(A) 6.67 ohms
(B) 60.0 ohms
(C) 120 ohms
(D) 180 ohms

Answers

Answered by bheemasiddartha

0

Answer:

yehehegheejhegsgsgshsj

Answered by ChAish

0

R=rho×l/A

R1=rho×3l/A/3

R1=rho×l/A×9

R1=20×9

R1=180 ohms

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