Determine the electric field produced by a helium nucleus at a distance of 1 Å from it.

There is one small bulb of 500 watt .Assume its effiency to be 20 % caculate amplitude of electric field produced by it a distance of 1 m from the bulb .

Determine the electric field at a distance r from a point charge.

The electric field due to a short dipole at a distance r, on the axial line, from its mid point is the same as electric field at a distance r^(') on the equatorial line, from its mid point.Determine the ratio r//r' .

The electric field due to a short dipole at a distance r, on the axial line, from its mid point is the same as electric field at a distance r^(') on the equatorail line, from its mid point. Determine the ratio r//r' oon the equatorial line, from its mid point. Determine the ratio r//r' .

The electric field at a point on the axial line at a distance of 10 cm from te centre of an electric dipole is 3.75 xx 10^5NC^-1 in air, while at a distance of 20 cm, the electric field is 3xx10^4NC^-1 . Calculate the length of the electric dipole.

An electric field due to a positively charged long straight wire at a distance r from it is proportional to r_(-1) in magnitude. Two electrons are orbiting such a long straight wire in circular orbits of radii 1 Å and 2 Å . The ratio of their respective time periods is

Electromagnetic waves are those waves in which these are sinusoidal variation of electric and magnetic fields at right angle to each other as well as right angle ot the direction of propagation. The ratio of electric vector and magnetic vector gives the velocity of light and vecExxvecB gives the direction of propagation of electromagnetic wave. The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance of E. The electric field intensity produced by the radiations coming from the 50 W bulb at the same distance is