Two identical positive charges are kept as shown in Fig < 0 x a The variation of electric field intensity E along x-axis is given by (The electric field intensity towards positive x-axis is taken as positive)

Two identical positive charges are placed at x=-a and x=a . The correct variation of potential V along the x-axis is given by

Two bar of identical dimensions are kept as shown in figure. If K_1 and K_2 are their coefficients of thermal conductivities, then equivalent K

Two identical positively charged particles P and Q are placed between two parallel paltes having a potential difference of V volts between them as shown in the figure. Which of them will experience larger force?

(a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole. (b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of Q.

Two equal positive charges, each of 2muC interact with a third positive charge of 3 muC situated as shown in Fig. Calculate the magnitude and direction of the force on the 3 muC charge.

The potential energy of the system of two identically charged spheres as shown in the figures is equal to (Assume the charge distribution to be uniform)

A positive point charge Q is kept (as shown in the figure) inside a neutral conducting shell whose centre is at C. An external uniform electric field E is applied. Then :