A wire is 3 meters long with a cross-sectional are of 4.50 x 10-6 m2. An electrician experienced a mild electric shock when he accidentally touched this wire carrying 5.2 mA for approximately 1.2 s. How many electrons constitute the given current he experienced?

A wire is 3 meters long with a cross-sectional are of 4.50 x 10-6 m2. An electrician experienced a mild electric shock when he accidentally touched this wire carrying 5.2 mA for approximately 1.2 s. How many electrons constitute the given current he experienced?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 65PQ

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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

A wire is 3 meters long with a cross-sectional are of 4.50 x 10^-6 m². An electrician experienced a mild electric shock when he accidentally touched this wire carrying 5.2 mA for approximately 1.2 s. How many electrons constitute the given current he experienced?

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