A particle a having a charge of `5.0 xx 10 ^(-7) C` is fixed in. a vertical wall. A second particle B of mass 100 g and. having equal charge is supended by a silk thread. of length 30 cm form the wall. The point of suspension is. 30 cm above the particle A. Find the angle of the thread. with the vertical when it stays in equilibrium.

A particle A having a charge of 2.0xx10 ^(-6) C is held fixed on a horizontal table. A second charged jparticle of mass 80g stays in equilibrium on the table at a distance of 10 cm from the firsst charge. The coefficient of friction between the table and this second jparticle is mu = 0.2 . find the range within which the charge of this second particle may lie.

A particle A having a charge of 2.0xx10 ^(-6) C is held fixed on a horizontal table. A second charged jparticle of mass 80g stays in equilibrium on the table at a distance of 10 cm from the firsst charge. The coefficient of friction between the table and this second jparticle is mu = 0.2 . find the range within which the charge of this second particle may lie.

A small charged particle of mass m and charge q is suspended by an insulated thread in front of a very large conducting charged sheet of uniform surface density of charge sigma . The angle made by the thread with the vertical in equilibrium is

A small charged particle of mass ‘m’ and charge q is suspended by an insulated thread in front of a very large conducting charged sheet of surface density of charge sigma . The angle made by the thread with the vertical in equilibrium is

Two small identical balls P and Q, each of mass 0.866 g, carry identical charges and are suspended by two threads of equal length 50 cm each from the same point. At equilibrium, they are separated by a distance of 50 cm. Find the charge on each ball (in nearest integer in nC ).

A charged particle of mass 1 g is suspended through a silk thread of length 40 cm in a horizontal electric field.fo 4.0 xx 10^4NC^-1 . If the particle stays at a distane of 24 cm from the wall in equilirbium, find the charge on the particle.

A simple pendulum of mass m and charge +q is suspended vertically by a massless thread of length l. At the point of suspension, a point charge +q is also fixed. If the pendulum is displaced slightly from equilibrium position, its time period will be

A water particle of mass 10.0 mg and having a charge of 1.50 xx 10^(-6)C stays suspended in a room. What is the magnitude of electric field in the room ? What is its direction?