MCAT Question A Day - 8/29/13 - Answer!
What is the potential difference between point A and point B if 10 J of work is required to move a charge of 4.0 C from one point to the other?
A. 0.4 V
B. 2.5 V
C. 14 V
D. 40 V
The correct answer is (B). Potential difference between two points in an electric field is the work per unit charge required to move a charge between the two points: V = W/q = joules/coulomb = volts
= 10 J/4.0 C = 2.5 V
Want more questions? - Click here to check out our MCAT Question A Day archive
