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A copper wire of resistance R is cut int...

A copper wire of resistance `R` is cut into ten parts of equal length. Two pieces each are joined in series and then five such combination are joined in parallel. The new combination will have resistance

A

`R`

B

`R/4`

C

`R/5`

D

`R/25`

Text Solution

Verified by Experts

The correct Answer is:
D
Five parallel combination, each of value
`R/10+R/1=R/25`
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