Question

The resistance of copper wire of length 25 m is 50 Ω. If its diameter is 1 mm, resistivity is -------- Ω meter. *

Answer 1

Answer:

here is your answer mate...

Explanation:

Resistance is inversely proportional to the square of the diameter of a wire. If diameter is doubled then resistance is reduced by 4 times. We have see so many resistors in an circuit.

The longer the wire, the more resistance that there will be. ... Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area.

this may helps  u...

The resistance of copper wire of length 25 m is 50 Ω. If its diameter is 1 mm, resistivity is 1.25 Ω meter.

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