Homework Help: Physics

Posted by Struggling Student on Saturday, January 19, 2013 at 1:31am.

A total charge of 16ìC passes through a cross-sectional area of a nichrome wire in 4 s. How many electrons pass through the cross-sectional area in 16 s?

This has to do with Electric current and so i know that means 16ìC = 16 x 10^-6 = 1.6x10^-5.

Physics - Elena, Saturday, January 19, 2013 at 6:01am
q= 16 μC = 16•10⁻ ⁶ C,
t₁ = 4 s.
I=q/t₁=16•10⁻ ⁶/4=4•10⁻ ⁶ A,
N=I •t₂/e =4•10⁻ ⁶• 16/1.6•10⁻¹⁹ =4•10¹⁴ .
Physics - Struggling Student, Saturday, January 19, 2013 at 11:51am
Thank you very much

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