1kg piece of copper is drawn into a wire 1 mm thick, and another piece into a wire 2 mm thick. Compare the resistance of these wires
a)
b)
c)
d)
1kg piece of copper is drawn into a wire 1 mm thick, and another piece into a wire 2 mm thick. Compare the resistance of these wires
a)
b)
c)
d)
Question ID - 150569 | SaraNextGen Top Answer
1kg piece of copper is drawn into a wire 1 mm thick, and another piece into a wire 2 mm thick. Compare the resistance of these wires
a)
b)
c)
d)
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1kg piece of copper is drawn into a wire 1 mm thick, and another piece into a wire 2 mm thick. Compare the resistance of these wires |
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1 Answer
127 votes
Answer Key / Explanation : (d) -
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(d) Let Mass=volume So, or Now,
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be the density of the material of copper wire. Let
be the lengths of copper wires of diameter 1 mm and 2 mm respectively. As
(
127 votes
Answer Link
127