Two nonconducting infinite planes sheets having charges Q and 2Q are placed parallel to each other as shown in figure. The charge distribution on the four faces of the two plates is also shown. The electric field intensities at three points 1, 2, and 3 are `vecE_1, vecE_2, and vecE_3`, respectively. Then the magnitudes of `vecE_1 , vecE_2, and vecE_3` are, respectively (surface area of plates ) :

Two non-conducting infinite plane sheets having charges distributed on four faces as shown in figure are placed parallel to each other. The magnitude of electric field intensities at three points A, B and C are: (S is surface area of the sheet)

Two non-conducting infinite plane sheets having charges distributed on four faces as shown in figure are placed parallel to each other. The magnitude of electric field intensities at three points A, B and C are: (S is surface area of the sheet)

Two infinite sheets having charge densities sigma_1 and sigma_2 are placed in two perpendicular planes whose two-dimensional view is shown in figure. The charges are distributed uniformly on the sheets in electrostatic equilibrium condition. Four points are marked I, II, III and IV. The electric field intensities at these points are vecE_1, vecE_2, vecE_3, and vecE_4 , respectively. The correct expression for the electric field intensities is

Two infinite sheets having charge densities sigma_1 and sigma_2 are placed in two perpendicular planes whose two-dimensional view is shown in figure. The charges are distributed uniformly on the sheets in electrostatic equilibrium condition. Four points are marked I, II, III and IV. The electric field intensities at these points are vecE_1, vecE_2, vecE_3, and vecE_4 , respectively. The correct expression for the electric field intensities is

Three metallic isolated plates are given charges as shown in figure, the sum of the charges on the outer surfaces of the two plates ( 1 ) and ( 3 ) is (where -3Q and 4Q are total charges of plates ( 1 ) and ( 3 ) respectively.)

Three metallic isolated plates are given charges as shown in figure, the sum of the charges on the outer surfaces of the two plates ( 1 ) and ( 3 ) is (where -3Q and 4Q are total charges of plates ( 1 ) and ( 3 ) respectively.)

A charge 'q' is placed at one corner of a cube as shown in figure.The flux of electrostatic field vecE through the shaded area is :

Charges are placed on the vertices of a square as shown Let vecE be the electric field and V the potential at the centre. If the charges on A and B are interchanged with those on D and C respectively, then

Deduce the expression for the potential energy of a system of two point charges q_1 and q_2 brought from infinity to the points vecr_1 and vecr_2 respectively in the presence of electric field vecE .

Force between two conducting large plates , with charges Q and Q/2 as shown in the figure, is (Area of each face of plate =A)