Question

How many electrons pass through a lamp in one minute if the current be 220 MA

Answer 1

Hey.

Q = I t

So total charge passed in 1 minute

= 220 mA × 1 minute

= 220×10^-3 A × 60 s

= 13.2 C

As charge on 1 electron = 1.602 x 10^-19 C

So, no. of electrons = 13.2 / 1.602 x 10^-19

= 8.2397 × 10^19 electrons .

Thanks.

Answer 2

hope you like it

Q = I t

So total charge passed in 1 minute

= 220 mA × 1 minute

= 220×10^-3 A × 60 s

= 13.2 C

As charge on 1 electron = 1.602 x 10^-19 C

So, no. of electrons = 13.2 / 1.602 x 10^-19

= 8.2397 × 10^19 electrons