A) 5
B) 10
C) 20
D) 2
Correct Answer: B
Solution :
Let n parts be made thin, each part has resistance\[\frac{{{R}_{0}}}{n}.\] Connecting them parallel gives\[\frac{{{R}_{0}}}{n}\times \frac{1}{n}\Omega \]. \[\therefore \] \[\frac{{{R}_{0}}}{{{n}^{2}}}=\frac{100}{{{n}^{2}}}=1\] \[\Rightarrow \] \[{{n}^{2}}=100\] \[\Rightarrow \] \[n=10\]You need to login to perform this action.
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