Question

A current of 4A flows around a circuit in 10 seconds. How much charge flows

past a point in the circuit in this time? Also find the number of electrons passes in

the circuit. . ​

Answer 1

dq/dt = i

q=t×i

=10×4 =40 C charge

No of electrons = ne

ne = 40

n × 1.6 + 10^-19 = 40

n= 25 × 10^19 electrons

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Answer 2

Answer:

Q = 40 C

n = 25 × 10^19 electrons

Explanation:

Given:

I = 4A

t = 10sec

Q = It

Q = 4×10

Q = 40 C

Q = ne

n= Q/ e = 40 / 1.6 × 10^-19

n = 25 / 10^-19

n = 25 × 10^19

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