Intensity of electric field is a vector quan-tity:- Two point charges +4 nC and +5 Nc are placed at x=0.2 m and x=-0.3 m respectively along the x axis. Find the magnitude and direction of intensity of electric field at the origin.

Two point charges Q and -3Q are placed at some distance apart. If the electric field at the location of Q is E, then field at the location of -3Q is

Two point charge of 20muC and 80muC are placed 18cm apart .Find the position where the electric field is zero.

Two charges 2muC and -2muC are placed at points A and B is 6 cm apart:- What is the direction of the electric field at every point on the equipotential surface between them?

Electric field is an important way of characterising the electrical environment of a system of charges. Two point charges q, and q, of magnitude +10 C and-10C respectively are placed 0.1 m apart. Calculate the electric fields at points A, B and C shown in the figure.

Two charges +3muC and -3muC are separated by a very small distance of 5mm. If the arrangement is placed in a non uniform electric field, what happens?

An electric dipole placed in an electric field experiences a torque. When a dipole is placed in a uniform electric field the torque acting on it is found to be 0.707 times the maximum torque. Calculate the angle between the Intensity of electric fied and electric dipole moment and draw the orientation of the dipole in the electric field.

Two small spheres A and B carrying charges 2mu C and 6mu C respectively are separated by a fixed distance. Intensity of electric field at the location of B due to A is E. Intensity of electric field at the location of A due to B is