PCS$120$ Fall $2018$

FINAL EXAMINATION

DATE: December $5,2018$

$22.$ A $1\mathrm{.}0-C$ point charge is $15$ m away from a second point charge, and the electric force on one of them due to the other is $1\mathrm{.}0$ N $.$ What is the magnitude of the second charge? $)=({10}^{-9}C.$

A$)25$ C

B$)1\mathrm{.}0$ C

C$)10$ nC

D$)0\mathrm{.}025$ C

$25$ nC