The free ends of an electric circuit comprising a cell and switch are connected one by one to wires A, B, C and D. Which of these wires would produce least amount of heat?
| Wire | Length (cm) | Area of Cross-section (m2) |
|---|---|---|
| A | 10 | 10 × 10-8 |
| B | 10 | 8 × 10-8 |
| C | 12 | 6 × 10-8 |
| D | 5 | 10 × 10-8 |
Correct Answer :
C
Solution :
...
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