Answer to Question #55902 in Electricity and Magnetism for kola

Question

Points A and B each have an electric potential of +12 V. How much work would be required to take 3 C of positive charge from A to B?
0 J
3 J
9 J
36 J

2 The electric potential difference between two points A and B is 42 V. What is the work done by an external agent in carrying a charge of
5.0×10−5C
from A to B at constant speed?
2.1×10−3J
8.4×10−4J
21×10−4J
8.4×10−3J