Question

If resistance of a conductor at $20^\circ$C is $10\Omega$, then the resistance at $80^\circ$C is $[\alpha = 4 \times 10^{-3} \ ^\circ\text{c}^{-1}]$

Hint:

Always calculate the temperature difference $\Delta T$ first. Be careful with decimal places when multiplying by $\alpha$ as it's usually a small number (e.g., $10^{-3}$ or $10^{-4}$).

Answer 1