An electric current in a conductor varies with time according to the expression I(t) = 110 sin (90at), where I is in amperes and t is in seconds. What is the total charge passing a given point in the conductor from t =0 to t - 1/180 s?

An electric current in a conductor varies with time according to the expression I(t) = 110 sin (90at), where I is in amperes and t is in seconds. What is the total charge passing a given point in the conductor from t =0 to t - 1/180 s?

University Physics Volume 2

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ISBN:9781938168161

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Chapter16: Electromagnetic Waves

Section: Chapter Questions

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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.

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An electric current in a conductor varies with time according to the expression I(t) = 110 sin (90xt), where I is in amperes and t is in seconds. What is the total charge passing a given point in the conductor from t = 0 to t = 1/180 s?
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The charge is the integral of the current. C

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