same as, or (3) less than that before the stretch? (b) A 1.0-m length of copper wire with a 2.0-mm diameter is stretched out; its length increases by 25% while its cross- sectional area decreases, but remains uniform. Compute the resistance ratio (final to initial).
same as, or (3) less than that before the stretch? (b) A 1.0-m length of copper wire with a 2.0-mm diameter is stretched out; its length increases by 25% while its cross- sectional area decreases, but remains uniform. Compute the resistance ratio (final to initial).
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I'm confused on how to answer part b.
![IE ... As a wire is stretched out so that its length
increases, its cross-sectional area decreases, while the
total volume of the wire remains constant. (a) Will the
resistance after the stretch be (1) greater than, (2) the
same as, or (3) less than that before the stretch? (b) A
1.0-m length of copper wire with a 2.0-mm diameter is
stretched out; its length increases by 25% while its cross-
sectional area decreases, but remains uniform. Compute
the resistance ratio (final to initial).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff2188b11-926f-4a02-9047-46f03f4937df%2F5694346d-6edd-4632-9bc0-8297bd6bed70%2F4juzcgq_processed.png&w=3840&q=75)
Transcribed Image Text:IE ... As a wire is stretched out so that its length
increases, its cross-sectional area decreases, while the
total volume of the wire remains constant. (a) Will the
resistance after the stretch be (1) greater than, (2) the
same as, or (3) less than that before the stretch? (b) A
1.0-m length of copper wire with a 2.0-mm diameter is
stretched out; its length increases by 25% while its cross-
sectional area decreases, but remains uniform. Compute
the resistance ratio (final to initial).
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