- Electricity and Magnetism
For the problems of this chapter, assume (wherever
required) that the electric constant co is specified.
3.1. A thin insulator rod is placed between
two unlike point chargeF +q1 and —q 2
(Fig. 73).
O
O
f2
Fig. 73
How will the forces acting on the charges
change?
3.2. An electric field line emerges from a
positive point charge -f-q 1 at an angle a to the
****n ‘.
C/I;'
/2,13
Fig. 74
straight line connecting it to a negative
point charge —q 2 (Fig. 74).
At what angle will the field line enter
the charge —q2?