Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

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  1. 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?

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