Texts:
29. How much power is being released by the 18 V battery?
a) 18 W
b) 27 W
c) 36 W
d) 45 W
e) 54 W
30. Which point could have a potential of -3 V and zero electric field?
a) A
b) B
c) C
d) more than one of points A, B, and C are possible
e) none of the above are possible
(numbers 30-31) A solid conducting sphere is concentric with a conducting shell (cross section shown). The potential at the surface of the solid sphere is -2 V and all charges on both conductors remain at rest.
19 A
97 B
-2V
30. Which point could have a potential of -3 V and zero electric field?
a) A
b) B
c) C
d) more than one of points A, B, and C are possible
e) none of the above are possible