Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity

Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity of the conductor=5×10⁻⁵ Ω cm⁻¹. The resistance is

Options

(a) 8×10⁻² Ω
(b) 8×10⁻³ Ω
(c) 8×10⁻¹ W
(d) none of these.

Correct Answer:

8×10⁻² Ω

Explanation:

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