Electric Charges and Fields Set 1

A point charge of 40 stat coulomb is placed in front of an earthed metallic plane plate of large size. Then the force of attraction on the point charge is

Charge motion within the Gaussian surface gives changing physical quantity

The radius of a metallic sphere if its capacitance is is

Three capacitances of capacity and are connected in parallel. The total capacity will be

An uniform electric field exists along positive -axis. The work done in moving a charge 0.5 C through a distance 2 m along a direction making an angle with -axis is 10 J. Then the magnitude of electric field is

Two capacitors connected in parallel having the capacities and are given charge, which is distributed among them. The ratio of the charge on and will be

Electric potential is given by

Then electric force acting on 2C point charge placed on the origin will be

Two charges and are placed apart, as shown in the figure. A third charge is moved along the arc of a circle of radius from . The change in the potential energy of the system is where is

The S.I. unit of electric flux is

A solid conducting sphere of radius is surrounded by another concentric hollow conducting sphere of radius The capacitance of this assembly is proportional to