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Get Full Access to College Physics - 1 Edition - Chapter 20 - Problem 15pe
Get Full Access to College Physics - 1 Edition - Chapter 20 - Problem 15pe

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# Using the results of the above example on Example 20.3, ISBN: 9781938168000 42

## Solution for problem 15PE Chapter 20

College Physics | 1st Edition

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Problem 15PE

Problem 15PE

Using the results of the above example on Example 20.3, find the drift velocity in a copper wire of twice the diameter and carrying 20.0 A.

Example 20.3: Calculating Drift Velocity in a Common Wire Calculate the drift velocity of electrons in a 12-gauge copper wire (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20 A.) The density of copper is 8.80 × 103 kg/m3 .

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Step 1 of 3

Solution 15PE

The value of drift velocity in copper wire is -1.132 x 10-4 m/s

The negative sign indicates that the negative charge is moving in the direction opposite to conventional current.

Step 2 of 3

Step 3 of 3

##### ISBN: 9781938168000

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