Question

3×10^17 electron cross in 30 seconds through an area. what is the electric current?​

Answer 1

Answer:

Q=ne

e=1.6*10⁻¹⁹ C

n=3*10¹⁷

Q=ne

=3*10¹⁷*1.6*10⁻¹⁹

=0.048 C

we know that

I=Q/t

t=30

I=0.048/30

=0.0016 A

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Answer 2

Answer:

Q = It

then

I = Q/t

Then

charge in one e = 1.6×10^-19 C

then total charge = 1.6×3×10^17×10^-19 = 4.8×10(-²) = 0.048 C

then

I = 0.048/30 = 1.6×10(-³) A

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