Questions
If a wire of 1 ohm resistance is stretched to double its length, then the resistance will become
a
12 Ω
b
2 Ω
c
1 Ω
d
4 Ω
detailed solution
Correct option is D
R=ρlA; lA=2lA1A1=A2R1=ρ2lA/2=4R=4ΩTalk to our academic expert!
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Three resistors each of are connected together to form a network. The equivalent resistance of the network cannot be
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