PLEASE HELP!! WILL GIVE MEDAL! VERY IMPORTANT

A charge q of 7.3 × 10^15 coulomb moves from point A to point B in an electric field. If the potential energy of the charge at point A is 3.5 × 10^-12 joules and that at point B is 1.3 × 10^-12 joules, what is the potential difference between point A and B?
A. 1.3 × 10^2 volts
B. 3.0 × 10^2 volts
C. 3.5 × 10^3 volts
D. 6.8 × 10^3 volts

Question

PLEASE HELP!! WILL GIVE MEDAL! VERY IMPORTANT

A charge q of 7.3 × 10^15 coulomb moves from point A to point B in an electric field. If the potential energy of the charge at point A is 3.5 × 10^-12 joules and that at point B is 1.3 × 10^-12 joules, what is the potential difference between point A and B?
A. 1.3 × 10^2 volts
B. 3.0 × 10^2 volts
C. 3.5 × 10^3 volts
D. 6.8 × 10^3 volts

anonymous · Answer

i think its either C or D unless im working this completely wrong

anonymous · Answer

10^15 coulomb ?  !!!  i think it would be 10^-15 coulomb...

anonymous · Answer

you can use this..  U=V*q  for both A and B points..

anonymous · Answer

nope question has 10^15

anonymous · Answer

nope still dont know what im doing

anonymous · Answer

are you sure? 10^15 coulomb charge is extremely huge.. if it is 10^-15 , the answer would be  b.

anonymous · Answer

Yes im sure thats the charge of q