Answered: 4-A cylindrical conducting wire has…

4-A cylindrical conducting wire has resistance R. It is reformed (4 i) to twice its original length with no change of volume. Its new resistance is A) 4R B) R C) 2R D) 8R

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 4C: Using your understanding of the nature of internal energy and temperature, explain why we might...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

4-A cylindrical conducting wire has resistance R. It is reformed (4 i) to twice its
original length with no change of volume. Its new resistance is
A) 4R
B) R
C) 2R
D) 8R

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