A capacitor is discharged through a wire with a time constant t. When the wire is replaced by another wire which is made of the same material and of the same length but with cross- sectional area twice that of the first wire, what is the new time constant? A) 2t B) 4t C) t/2 D) t/4

A capacitor is discharged through a wire with a time constant t. When the wire is replaced by another wire which is made of the same material and of the same length but with cross- sectional area twice that of the first wire, what is the new time constant? A) 2t B) 4t C) t/2 D) t/4

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

Chapter20: Electric Potential And Capacitance

Section: Chapter Questions

Problem 1OQ: A parallel-plate capacitor is charged and then is disconnected from the battery. By what factor does...

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Dielectric Constant Of Water

Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

Electrostatic Potential and Capacitance

An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.

Question

A capacitor is discharged through a wire with a time constant t. When the wire is replaced by
another wire which is made of the same material and of the same length but with cross-
sectional area twice that of the first wire, what is the new time constant?
A) 2t
B) 4t
C) t/2
D) t/4

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