1. An electric current of 0.028 A flows through a vacuum tube. What is a) the amount of charge
b) the number of electrons
passing through the tube in 75 s?

2.1 column, 1.31×10^19 electrons

Explanation:

Now Charge, Q = current × time

=0.028×75=2.1columb

2. Now the charge of 1 electron is 1.6×10^-19C

Hence for 2.1 C, the number of electron is;

2.1/1.6×10^-19 = 1.31×10^19 electrons

what are the options.

explanation:

i believe the answer is electric potential.

explanation: