Answer to Question #298721 in Physics for jules

Question

A proton is placed in uniform electric field that is directed downward and has a magnitude of 5.0 N/C. What is the magnitude and direction of the electric force experience by the proton?

Answer 1

Given:

$E=5.0\:\rm N/C$

$e=1.6*10^{-19}\:\rm C$

The electric force on a charge

$$F=eE=\rm 1.6*10^{-19}*5.0=8.0*10^{-19}\: N$$

The force is directed downward.