Question

A current of 800 mAis passed through an electric lamp for a minute. find the nunber of electrons passing through it if charge on electron is 1.6 x 10-19 C. ?​

Answer 1

Answer:

Total charge that flows in 2s is given by 

q=It=5×2=10C

Now, charge on one electron is given by e=1.6×10^−19C

N= number of electrons

q=Ne

⟹N=eq

⟹N=10/1.9×10^-19

⟹N=6.25×10^19