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Physics / Sears and Zemansky's University Physics with Modern Physics 13 / Chapter 30 / Problem 10DQ

Sears and Zemansky's University Physics with Modern Physics | 13th Edition | ISBN: 9780321696861 | Authors: Hugh D. Young; Roger A. Freedman; A. Lewis Ford

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In Section 30.5 the relationship i = dq/dt is used in

Chapter 30, Problem 10DQ

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QUESTION:

In Section $30.5$ the relationship $i=dq/dt$ is used in deriving Eq. (30.20). But a flow of current corresponds to a decrease in the charge on the capacitor. Explain, therefore, why this is the correct equation to use in the derivation, rather than \(i=-d q / d t\).

Equation transcription:

$i=-dq/dt$

Text transcription:

i=-d q / d t

Questions & Answers

QUESTION:

In Section $30.5$ the relationship $i=dq/dt$ is used in deriving Eq. (30.20). But a flow of current corresponds to a decrease in the charge on the capacitor. Explain, therefore, why this is the correct equation to use in the derivation, rather than \(i=-d q / d t\).

Equation transcription:

$i=-dq/dt$

Text transcription:

i=-d q / d t

ANSWER:

Solution 10DQ

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