1. Calculate the resistance of 100 m length of a wire having a uniform cross-sectional area of 0.1 mm if the wire is made of manganin having a resistivity of 50 × 10* 2m. If the wire is drawn out to three times its original length, by how many times would you expect its resistance to be increased ? [500 2 9 times]

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
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Chapter12: Electronic Control Devices
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1. Calculate the resistance of 100 m length of a wire having a uniform cross-sectional area of 0.1 mm
if the wire is made of manganin having a resistivity of 50 x 10° 2m.
If the wire is drawn out to three times its original length, by how many times would you expect its
resistance to be increased ?
[500 2; 9 times]
Transcribed Image Text:1. Calculate the resistance of 100 m length of a wire having a uniform cross-sectional area of 0.1 mm if the wire is made of manganin having a resistivity of 50 x 10° 2m. If the wire is drawn out to three times its original length, by how many times would you expect its resistance to be increased ? [500 2; 9 times]
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