Van de Graaff generator produces an electrostatic potential difference of_______ volts.

Find the electric field at x = 5m from the graph.

A charge q₁ exerts force on charge q₂. If another charge q₃ is brought near, the force of q₁, exerted on q₂, will be

A charge q is enclosed as shown in fig. The electric flux is 

Electric field at a distance r from infinitely long conducting sheet is proportional to 

The electric flux over a sphere of radius 1m is ф. If radius of the sphere were doubled without changing the charge enclosed, electric flux would become

Surface density of charge on a sphere of radius R in terms of electric intensity E at a distance r in free space is

Electric field intensity at a point due to an infinite sheet of charge having surface charge density σ is E. If the sheet were conducting, electric intensity would be

A charge q is placed at the centre of a cubical box of side with top open. The flux of electric field through the surface of the cubical box is

A Gaussian surface in the figure is shown by dotted line. The electric field on the surface will be

A polythene piece rubbed with wool is found to have negative charge of 3.2 x 10^-7C. Estimate the number of electrons transferred from wool to polythene

A point charge q is placed at a distance a/2 directly above the centre of a square of side 'a'. The electric flux through the square is

In two concentric hollow spheres of radii r and R (>r), the charge Q is distributed such that their surface densities are some. Then the potential at their common centre is

A condenser of 2μF capacitance is charged steadily from 0 to 5 coulomb. Which of the following graphs correctly represents the variation of potential difference across its plates with respect to the charge on the condensor [Q = C V ]

Charge Q on a capacitor varies with voltage V as shown in graph, where Q is along X-axis and V along Y-axis. The area of triangle OAB represents

During charging a capacitor variation of potential V of the capacitor with time t as shown a

What physical quantities may X and Y represent? [Y represents the first mentioned quantity].

In a hollow spherical shell potential (V) changes with respect to distance (r) from centre.
\(\left[ { V }_{ inside }=\frac { Q }{ 4\pi { \varepsilon }_{ 0 }R } r\le R,\quad { V }_{ outside }=\frac { Q }{ 4\pi { \varepsilon }_{ 0 }r } r\ge R,V\alpha \frac { 1 }{ r } \right] \)

Which graph shows the variation of electric field E due to a hollow spherical conductor of radius R as a function of distance from the centre of the sphere?

A charge Q is placed at the corner of a cube. The electric flux through all the six faces of the cube is