A and CD are two large non parallel metallic plates connected to a battery as shown. If `sigma_(A)` and `sigma_(B)` be charge densities at points A and B respectively then

Two teams A and B have the same mean and their coefficients of variance are 4, 2 respectively. If sigma_(A), sigma_(B) are the standard deviations of teams A, B respectively then the relation between item is

Two metal wires of identical dimesnios are connected in series. If sigma_(1) and sigma_(2) are the conducties of the metal wires respectively, the effective conductivity of the combination is

Two metal wires of identical dimesnios are connected in series. If sigma_(1) and sigma_(2) are the conducties of the metal wires respectively, the effective conductivity of the combination is

X and Y are large, parallel conducting plates close to each other. Each face has an area A . X is given a charge Q . Y is without any charge. Points A,B and C are as shown in the figure.

Three concentric spherical metallic spheres A,B and C of radii a , b and c(a lt b lt c) have surface charge densities sigma , -sigma and sigma respectively.

Four initially uncharaged thin, large, plane idential metallic plates A,B,C and D are arranged parallel to each other as shown. Now plates A,B,C and D are given charges Q,2Q,3Q and 4Q respectively. Plates A and D are connected by a mtallic wire while plates B and C connected by other metallic wire then after Electrostatic equilibrium is reached. Total charge on plates after earthing plates A and B will be

Four initially uncharaged thin, large, plane idential metallic plates A,B,C and D are arranged parallel to each other as shown. Now plates A,B,C and D are given charges Q,2Q,3Q and 4Q respectively. Plates A and D are connected by a mtallic wire while plates B and C connected by other metallic wire then after Electrostatic equilibrium is reached. Charge on left surface of plate B wll be

Two spherical conductors of radii 4 cm and 5 cm are charged to the same potential. If sigma_(1) and sigma_(2) be respective value of surface density of charge on both the conductors, then the ratio of sigma_(1)//sigma_(2) will be

A small sphere with mass 1.2 g hangs by a thread between two parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities + sigma and - sigma . The charge on the sphere is q = 9 xx 10^-6 C . What potential difference between the plates will cause the thread to assume an angle of 37^(@) with the vertical as shown in (Fig. 3.134) ? .

Three concentric charged metallic spherical shells A, B and C have radii a,b and c, charge densities sigma,-sigma and sigma and potentials V_A,V_B and V_C respectively. Then which of the following relations is correct?