[问答题]
1.Define electric po wz3+(.xlr2zsu8 bx b9eurod:to.:e+rgcxf 3rzx)( adential energy.
2.Two parallel plates are at potentials −2V and +12V as shown in the diagram.
On the diagram, sketch
（1）The pattern of electric field lines between the two plates
（2）The equipotential line which represents zero volts.
3.Calculate the work done by the electric field on a charge of −6.0μC when it is moved from plate B to plate A.
