If the specific charge (charge to mass ratio) of first ball is k, the specific charge of second ball isChoose answer: 2k 4k

The centre of the ball, still carrying a charge of 1.2 × 10-6 C, is now placed 0.40 m froma point charge Q. The charge on the ball acts as a point charge at the centre of the ball.P is the point on the line joining the charges where the electric field strength is zero.The distance PQ is 0.22 m.0.40 m0.22 mP Q+1.2 µCCalculate the charge on Q. State your answer to an appropriate number ofsignificant figures.

Two small conducting balls A and B of radius r1 and r2 have charges q1 and q2 respectively. They are connected by a wire.Obtain the expression for charges on A and B, in equilibrium

The ratio of charge and mass would be greatest for

Two pith balls, each with a mass of 1.2 g, are attached to non-conducting threads and suspended from a common hook. Each thread has a length of 29.7 cm. The balls are then given an identical charge, which causes them to separate. In equilibrium, the threads are separated by an angle of 10.0°. Calculate the charge on each pith ball, in coulombs (C).

Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will beGroup of answer choicesF/2.F/4.2F.F.