NEET 2023 | Current Electricity Question 7 | Physics

The resistance of platinum wire at $$0^{\circ} \mathrm{C}$$ is $$2 ~\Omega$$ and $$6.8 ~\Omega$$ at $$80^{\circ} \mathrm{C}$$. The temperature coefficient of resistance of the wire is :

$$3 \times 10^{-3} \mathrm{C}^{-1}$$

$$3 \times 10^{-2} \mathrm{C}^{-1}$$

$$3 \times 10^{-10} \mathrm{C}^{-1}$$

$$3 \times 10^{-4} \mathrm{C}^{-1}$$

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