10.A cylindrical copper rod has resistance R. It is reformed to twice its original length
with no change of volume. Its new resistance is:
a R.
b. 2R
C. 4R
d. 8R
e. R/2
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Answered by
3
Answer:
I think that but I am 99%sure (B. 2R)....
. I hope it is right
Answered by
1
Answer:
No the correct answer is 4R.
Explanation:
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