Question

Current of 1A passes through a conductor in 4 seconds. Calculate the number of electrons which drift through this conductor from one end to another during this interval of time
(Charge on one electron = 1.6 × 10–19C).

Answer 1

Answer:-

• Current=I=1A
• Time=t=4s
• Charge=Q=?

We know that

$\boxed{\sf I=\dfrac{Q}{t}}$

$\\ \sf\longmapsto Q=It$

$\\ \sf\longmapsto Q=4\times 1$

$\\ \sf\longmapsto Q=4C$

Now

$\\ \sf\longmapsto 1C=1.6\times 10^{-19}C$

$\\ \sf\longmapsto 4C=4\times 1.6\times 10^{-19}$

$\\ \sf\longmapsto 4C=6.4\times 10^{-19}C$