Question

A current of 120 milli ampere flows through the circuit for 4 minutefind the amount of charge and no. of electrons.

Answer 1

Answer:

Q=28.8 C

n=18*10^19

Explanation:

Q= it= (120*10^-3)*(4*60)

  =28.8 C

Q=ne  

=> n = q/e =28.8/(1.6*10^-19)

       =18 * 10^19

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