JEE Mains · Physics · STD 12 - 3. current electricity
A wire of resitance \(R\) and length \(L\) is cut into \(5\) equal part. if these parts are joined parts are joined paralley, than result resistance will be:
- A \(\frac{1}{25}\ \mathrm{R}\)
- B \(\frac{1}{25}\ \mathrm{R}\)
- C \(25\ \mathrm{R}\)
- D \(5\ \mathrm{R}\)
Answer & Solution
Correct Answer
(A) \(\frac{1}{25}\ \mathrm{R}\)
Step-by-step Solution
Detailed explanation
Resistance of each part \(=\frac{R}{5}\) Total resistance \(=\frac{1}{5} \times \frac{R}{5}=\frac{R}{25}\)
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