(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A net charge of 49 mC passes through the cross-sectional area of a wire in 12.0 s

(a) What is the current in the wire?

_4.1E-3_ A

(b) How many electrons pass the cross-sectional area in 1.0 min?

______electrons

2. Relevant equations

I=Q/t

3. The attempt at a solution

part A was very simple, 49E-3/12 = 4.1E-3 amps

however part b i do not understand.

1 electron = 1.6E-19 and 1 coulumb = 6.24E18

49E-3 x 6.24E18 = 3.06E17 x 60 = 1.8E19 incorrect

49E-3 x 1.6E-19 = 7.84E-21 x 60 = 4.7E-19 incorrect

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# Homework Help: Electric current? how many electrons?

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