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Show that the units 1 A2 ? ? = 1 W , as implied by the

ISBN: 9781938168000 42

Solution for problem 47PE Chapter 20

College Physics | 1st Edition

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College Physics | 1st Edition

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Problem 47PE

Show that the units 1 A2 ⋅ Ω = 1 W , as implied by the equation P = I2R .

Step-by-Step Solution:
Step 1 of 3

Solution 47PE

[P] = [I2] [R]

Substitute (ohm) for [R] and A (Ampere) for [I],

[P] = A2.

Now by ohm’s law,

V= IR

Unit of R is,

[R] =

Substitute A (Ampere) for [I] and V (Volt) for[V] .

Rewrite the unit of power as,

[P] = A2.

Substitutefor .

[P] = A2.

...

Step 2 of 3

Step 3 of 3

ISBN: 9781938168000

This textbook survival guide was created for the textbook: College Physics , edition: 1. College Physics was written by and is associated to the ISBN: 9781938168000. This full solution covers the following key subjects: equation, implied, show, Units. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The full step-by-step solution to problem: 47PE from chapter: 20 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. The answer to “Show that the units 1 A2 ? ? = 1 W , as implied by the equation P = I2R .” is broken down into a number of easy to follow steps, and 21 words. Since the solution to 47PE from 20 chapter was answered, more than 280 students have viewed the full step-by-step answer.

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