What causes the charging of a body?

Important Questions on Electricity

HARD

Science>Physics>Electricity>Methods of Charging

Two isolated conducting spheres

S_{1}

and

S_{2}

of radius

\frac{2}{3} R

and

\frac{1}{3} R

have

12 μ C

and

- 3 μ C

charges, respectively, and are at a large distance from each other, They are now connected by a conducting wire. A long time after this is done the charges on

S_{1}

and

S_{2}

are respectively:

EASY

Science>Physics>Electricity>Methods of Charging

Two identical conducting spheres A and B carry equal charge. They are initially separated by a distance much larger than their diameters and the force between them is F. A third identical conducting sphere C is uncharged. Sphere C is first touched to A, then to C and removed. As a result, the force between A and B now is

MEDIUM

Science>Physics>Electricity>Methods of Charging

Give reasons for the following:

Rishabh rubbed a plastic scale over his hair and brought it near bits of paper. The bits of paper were attracted towards the scale. He tried the same thing with a metal scale but the bits of paper were not attracted towards it.

EASY

Science>Physics>Electricity>Methods of Charging

How will you charge a glass rod by the method of friction?

EASY

Science>Physics>Electricity>Methods of Charging

An inflated rubber balloon and a woollen cloth are rubbed together. What type of charge is acquired by

(a) woollen cloth and, (b) rubber balloon?

EASY

Science>Physics>Electricity>Methods of Charging

Name the following:

Electric charges produced by rubbing. (Static charges/Dynamic charges)

MEDIUM