Electrostatics ...

Work required to set up the four charge configuration (as shown in the figure) is

In the following diagram, the work done in moving a point charge from point P to point A, B and C is respectively as W_A , W_B and W_C , then

A positively charged ball hangs from a silk thread. We put a positive test charge q₀ at a point and measure F/q₀, then it can be predicted that the electric field strength E will be

The positive terminal of 12 V battery is connected to the ground. Then the negative terminal will be at

A charge (–q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (–q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done in moving the charge (–q) is

A long string with a charge of λ per unit length passes through an imaginary cube of edge a. The maximum flux of the electric field through the cube will be

The capacitance of the capacitor of plate areas A₁ and A₂ (A₁ < A₂) at a distanced d, Fig. is

In the circuit shown in Fig., C = 6 µF. The charge stored in capacitor of capacity C is

A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80 V. The potential at the centre of the sphere is

Two capacitors A and B are connected in series with a battery as shown in Fig. When the switch S is closed and the two capacitors get charged fully, then