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