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11-08-2020
Physics

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A current of 2.0A is following through a wire when a 10 volts potential difference is applied across the wire. If the length of the wire is 1.0 meter and its cross sectional area is 2 - 10-7m2, what is the resistivity of the wire?

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FaDaReAdEoLa FaDaReAdEoLa

17-08-2020

Answer:

1 × 10^-6 ohm meter

Explanation:

R = V/I

R = 10/2 = 5 ohms

R = pl/A

p = (RA)/l

= (5×2×10^-7) /1

= 1 × 10^-6

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