Physics Test 12...

Figure shows some of the electric field lines corresponding to an electric field. The figure suggests that

When the separation between two charges is increased,the electric potential energy of the charges

An electric dipole is placed in a uniform electric field.The net electric force on the dipole

The electric field in a region is directed outward and is proportional to the distance r from the origin.Taking the electric potential at the origin to be zero,

A charge Q is uniformly distributed over a large plastic plate. The electric field at a point P close to the centre of the plate is 10 V/m. If the plastic plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q, the electric field at the point P will become

Electric charge are distributed in a small volume. The flux of the electric field through a spherical surface of radius 10cm surrounding the total charge is 25V-m The flux over a concentric sphere of radius 25cm will be

100V–m 4. A charge q is placed at the centre of the open end of a cylindrical vessel in figure. The flux of the electric field through the surface of the vessel is

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Figure shows a closed surface which intersects a conducting sphere. If a positively charged is placed at the point P, the flux of the electric field through the closed surface

Two capacitors each having capacitance C and breakdown voltage V are joined in series. The capacitance and the breakdown voltage of the combination will be