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The drawing shows a graph of a set of equipotential surfaces seen in cross section. Each is
labeled according to its electric potential. The work done by an electric force in moving a charge
from point A to point B is 2.7×10-³ J.
a) What is the charge?
b) What is the direction of electric field at point B?
c)
What is the electric field strength (approximately) at point A?
+150.0 V
+250.0 V
+350.0 V
C
B
D
+650.0 V
+550.0 V
+450.0 V
2.0 cm

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