Question

Find the number of electrons transferred between two points kept at a potential difference of 20 V if 40 J of work is done.

Answer 1

Answer:

1.25× 10^19

Explanation:

Given

voltage (V)=20V

work (W)=40J

Charge (Q)=W/V

= 2C

charge of electron(q)=1.6×10^-19C

number of electron(n)=Q/q

=1.25×10^19 electrons