Question

1. Which of the following statements are true?
a. electric field lines are orthogonal to equipotentialsurfaces
b. the electric field vanishes inside a conductor
c. the work done by the electric field on a charge transportedbetween
two points at the same potential is zero.
d. a and b
e. a, b and c


2. The electricl potential
a. is the same at all points of a charged conductor
b. is the same at all points of a charged insulator
c. is minus the gradient of the electric field.
d. a and c
e. b and c


3. The net electric flux into a box is nonzero. From this you canconclude that
a. the box is a conductor
b. the box is an insulator
c. the box contains a net negative charge
d. the box contains a net positive charge
e. the box contains no charge



A dipole in a uniform electric field will experience
a. a net force but no net torque
b. a net torque but no net force
c. a net force and a net torque
d. no net force and no net torque
e. nirvana