Answered: If the cross-sectional area of a wire…

If the cross-sectional area of a wire is doubted while keeping the current unchanged the current density will be a) Reduced to half c) Tripled b)Doubled d) Reduced 10 times

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 7P

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Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

If the cross-sectional area of a wire is doubted while keeping the current unchanged the current density will be

a) Reduced to half c) Tripled

b)Doubled d) Reduced 10 times

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