Question

A metal wire carries a current of 1 A. How many electrons move past a point in the wire in one second

• A. $6.02 \times 10^{23}$
• B. $3.12 \times 10^{18}$
• C. $3.02 \times 10^{23}$
• D. $6.24 \times 10^{18}$

Answer 1

Answer: (D)

$6.24 \times 10^{18}$

Answer 2

Total charge passed in one second $'Q' = I \times t = 1 \times 1 = 1c$

$\because$ 96500 current carried by $6.02 \times 10^{23}$ electrons

$\mathbf{\therefore}$ 1C current carried by $\frac{6.02 \times 10^{23}}{96500} = 6.24 \times 10^{18}$