A wire of resistance 9 ohm having length 30 cm is tripled on itself. What is its new resistance ?

Explanation

To solve the problem of finding the new resistance of a wire that is tripled on itself, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values**:
- Initial resistance of the wire, \( R_1 = 9 \, \Omega \)
- Initial length of the wire, \( L_1 = 30 \, \text{cm} \)

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