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Problem
Problem
A copper wire of resistance
R
R
R
is cut into ten parts of equal length. Two pieces each are joined in series and then five such combinations are joined in parallel. The new combination will have a resistance (a)
R
R
R
(b)
R
4
\frac{R}{4}
4
R
(c)
R
5
\frac{R}{5}
5
R
(d)
R
25
\frac{R}{25}
25
R
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