Calculate the potential difference if 80J of energy are transferred by 20C of charge.

now potential difference=work/charge

=80/20

=4v

Explanation:

hope it helps

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.