A piece of wire of resistance `R` is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is `R'`, then the ratio `R//R'` is :

Options

A. `1/25`
B. `1/5`
C. 5
D. 25

Explanation

To solve the problem, we need to follow these steps:

### Step 1: Determine the resistance of each part
The original wire has a resistance \( R \). When it is cut into five equal parts, the resistance of each part (let's denote it as \( r \)) can be calculated as:
\[ r = \frac{R}{5} \]

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