Physics, Volume One: Chapters 1-17
Physics, Volume One: Chapters 1-17
10th Edition
ISBN: 9781118836880
Author: John D. Cutnell, Kenneth W. Johnson
Publisher: WILEY
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Chapter 20, Problem 1FC
To determine

The current I in the wire.

Expert Solution & Answer
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Answer to Problem 1FC

The current I in the wire is 1.5A_ .

Explanation of Solution

Given data:

Total number of electrons (N) pass a certain point in a wire is 1.9×1019

Time (Δt) is 2.0 s.

Formula used:

Consider the expression for number of electrons (N) .

N=Δqe (1)

Here,

Δq is the magnitude of the charge, and

e is the electric charge, which is known as 1.60×1019C .

Consider the expression for current, if the rate is constant.

I=ΔqΔt (2)

Here,

I is the current, and

Δt is the time.

Explanation:

Rearrange equation (1).

Δq=eN

Substitute 1.60×1019C for e and 1.9×1019 for N ,

Δq=(1.60×1019C)(1.9×1019)=3.04C

Substitute 3.04C for Δq and 2.0s for Δt in equation (2),

I=3.04C2.0s=1.52A1.5A

Conclusion:

Thus, the current I in the wire is 1.5A_ .

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Chapter 20 Solutions

Physics, Volume One: Chapters 1-17

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