Two metal sphere of same mass are suspended form a common point by a light insulating string.The length of each string is same.The sphere are given electric charges `+q` on one end and `+4q` on the other.Which of the following diagram best shows the resulting positions of spheres?

Two small spheres, each having a mass of 20 g, are suspended form a common point by two insulating strings of length 40 cm each. The spheres are identically charged and the speration between the balls at equilibrium is found to be 4 cm . Find the charge on each sphere.

Three identically charged, small spheres each of mass m are suspended from a common point by insulated light strings each of length I. The spheres are always on vertices of an equilateral triangle of length of the sides x (ltlt l) . Calculate the rate dq/ dt with which charge on each sphere increases if length of the sides of the equilateral triangle increases slowly according to law (dx)/(dt)=(a)/(sqrt(x))

Two small spheres each of mass m are suspended from a common point by threads 0.5 m long. They are equally charged and repel each other to a distance of 0.28m. If =g10ms^(-2) , what is the charge on each sphere?

Two positively charged sphere of masses m_(1) and m_(2) are suspended from a common point at the ceiling by identical insulating massless strings of length l . Charges on the two spheres are q_(1) and q_(2) respectively. Equilibrium both strings make the same angle theta with the vertical. then

Two identical charged spheres suspended form a common point by two massless strings of lengths l, are initially at a distance d(d gt gt l) apart because of their mutual repulsion. The charges brgin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between the spheres, as

Two positively charged spheres of masses m_(1), " and " m_(2) are suspended from a common point at the ceiling by identical insulating massless strings of length l. Charged on the two spheres are q_(1) " and " q_(2) , respectively. At equilibrium both strings make the same angle theta with the vertical. Then