1. Equipotentials are: A] always perpendicular to field lines B] perpendicular to field lines only near point charges C] perpendicular to field lines only near conductors D] both B & C E] cannot say, as it depends on the details

2. In electrostatics (problems where charge does not move), different points in the same conductor A] may be at different potential, if there are charges nearby B] are always at a different potential C] are always at exactly the same potential D] cannot determine without more detailed info

3. In electrostatics, Electric field lines A] cannot touch conductors B] must touch conductors at right angles to the surface C] will touch conductors at right angles only if there are no nearby charges D] will touch conductors only at sharp points

4. Consider equipotentials around a point + charge. There are no other charges in our universe. Which is true ? A] The distance between V=+4 Volts and V=+3 Volts is the same as the distance between V=+3 and V=+2 B] The distance between V=+4 Volts and V=+3 Volts is smaller than the distance between V=+3 and V=+2 C] The distance between V=+4 Volts and V=+3 Volts is larger than the distance between V=+3 and V=+2

5. The plate is a conductor with negative charge equal in magnitude to the point + charge. What is most wrong with the field lines as drawn? A] no field lines leave the conductor B] no field lines go to infinity C] the lines don’t leave the point + charge symmetrically D] nothing is wrong with the lines

6. The plate is a conductor with no net charge. What is wrong with the field lines as drawn? A] the field lines must not touch the conductor, since it has no charge B] 6 field lines must go off to infinity C] whatever number of field lines that touch the conductor pointing in, there must be the same number touching the conductor pointing out. D] B&C are both serious errors E] there is no serious error in the field lines as shown