JEE Mains · Physics · STD 12 - 3. current electricity
A wire of resistance \(R\) and length \(L\) is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be _______.
- A \(\frac{R}{25}\)
- B \(\frac{R}{5}\)
- C \(25 R\)
- D \(5 R\)
Answer & Solution
Correct Answer
(A) \(\frac{R}{25}\)
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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