The current in an electron beam in a cathode-ray tube is 7.0 x 10-5 A. How much charge hits the screen in 5.0 s? Group of answer choices 6.2 x 10^-4 C 9.3 x 10^-4 C 1.3 x 10^-4 C 2.5 x 10^-4 C 3.5 x 10^-4 C

The current in an electron beam in a cathode-ray tube is 7.0 x 10-5 A. How much charge hits the screen in 5.0 s? Group of answer choices 6.2 x 10^-4 C 9.3 x 10^-4 C 1.3 x 10^-4 C 2.5 x 10^-4 C 3.5 x 10^-4 C

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 92CP: A 12-V car battery is used to power a 20.00-W, 12.00-V lamp during the physics club camping...

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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 current in an electron beam in a cathode-ray tube is 7.0 x 10^-5 A. How much charge hits the screen in 5.0 s?

Group of answer choices

6.2 x 10^-4 C

9.3 x 10^-4 C

1.3 x 10^-4 C

2.5 x 10^-4 C

3.5 x 10^-4 C

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