The heating element for an electric stove is made from a wire of resistance R. It is replaced with a wire of the same material which has the same cross sectional area but half of its length. The resistance of the second wire is O a. R/4 O b. R/2 C. AR O d. 2R

The heating element for an electric stove is made from a wire of resistance R. It is replaced with a wire of the same material which has the same cross sectional area but half of its length. The resistance of the second wire is O a. R/4 O b. R/2 C. AR O d. 2R

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 12PE: The speed of propagation of the action potential (an electrical signal) in a nerve cell depends...

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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

The heating element for an electric stove is made from a wire of
resistance R. It is replaced with a wire of the same material which
has the same cross sectional area but half of its length. The
resistance of the second wire is
n
O a. R/4
O b. R/2
O C. AR
O d. 2R

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