The resistance of a wire of radius 0.02 cm is 20 ohm. If the resistivity of the material of
the wire is 50×10−8 Ωm, find the length of the wire.
Class 10th science
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find the image and get the value
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Given, Radius = 0.02 cm = 0.02x 10-2m.
Resistivity p = 50 x 10-8Ωm.
Resistance, R = 20Ω
Answer: 5.024 m
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