Two point charges of magnitude `+4 mu C` and `-9 mu C` are 0.5m apart. The electric intensity is zero at a distance x m from `+4 mu C` .Then x is

Two positive point charges of 12 mu C and 8 mu C are 10 cm apart. The work done in bringing then 4 cm closer is

Two positive point charges of 12 mu C and 8 mu C are 10 cm apart. The work done in bringing then 4 cm closer is

Two point charges of 20 mu C and 80 muC are 10 cm apart where will the electric field strength be zero on the line joining the charges from 20 mu C charge

Two charges +20 mu C and - 20 muC are 5 mm apart. Find the electric field on axial as well as on the equatorial line at a distance 20 cm from the mid -point of the dipole.

Two point electric charges of unknown magnitudes and signs are placed a certain distance apart. The electric field intensity is zero at a point not between the charges but on the line joining them. Write two essential conditions for this to happen.

A and B are two points separately by a distance 5cm. Two charges 10 mu C and 20mu C are placed at A and B. The resultant electric intensity at a point P outside the charges at a distance 5cm from 10 mu C is

Two electric charges 12 mu C and -6 mu C are placed 20 cm apart in air. There will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of P from 6 mu C charge is

Two charges +5mu C and +10 mu C are placed 20 cm apart. The net electric field at the mid-point between the two charges is

Two charges, each of 5 mu C but opposite in sign, are placed 4 cm apart. Calculate the electric field intensity of a point that is a distance 4 cm from the mid point on the axial line of the dipole.

Two equal and opposite charges of magnitude 0.2 mu C are 15 cm apart, the magnitude and direction of the resultant electric intensity at a point midway between the charges is