List of top Physics Questions on Electrostatics asked in MET

A parallel plate capacitor has an electric field of \(10^5\) V/m between the plates. If the charge on the capacitor plate is 1 \(\mu\)C, the force on each capacitor plate is

A charged particle of mass 0.003 g is held stationary in space by placing it in a downward direction of electric field of \(6 \times 10^4\) N/C. Then the magnitude of the charge is

Two capacitors \(C_1\) and \(C_2 = 2C_1\) are connected in a circuit with a switch between them as shown in the figure. Initially the switch is open and \(C_1\) holds charge Q. The switch is closed. At steady state, the charge on each capacitors will be

A thin metal plate P is inserted halfway between the plates of a parallel plate capacitor of capacitance C in such a way that it is parallel to the two plates. The capacitance now becomes

The distance between charges $5\times 10^{-11}\mathrm{C}$ and $-2.7\times 10^{-11}\mathrm{C}$ is $0.2\mathrm{m}$. The distance at which a third charge should be placed from the second charge in order that it will not experience any force along the line joining the two charges is

Small rain drops of the same size are charged to potential $V$ volt each. If $n$ such drops coalesce to form a single drop, then the potential of the bigger drop is

A small sphere is charged to a potential of $50\mathrm{V}$ and a big hollow sphere is charged to potential of $100\mathrm{V}$. Charge will flow from the smaller sphere to the bigger one when

At great distances from an electric dipole, the electric field strength due to the dipole varies with the distance as

Two equal charges \(q\) are kept fixed at \(-a\) and \(+a\) along the \(x\)-axis. A particle of mass \(m\) and charge \(\dfrac{q}{2}\) is brought to the origin and given a small displacement along the \(x\)-axis, then

Two equal point charges, \(Q = +\sqrt{2}\ \mu\)C are placed at each of the two opposite corners of a square and equal point charges \(q\) at each of the other two corners. The value of \(q\), so that the resultant force on \(Q\) is zero is

Two capacitors, one 4 pF and the other 6 pF, connected in parallel, are charged by a 100 V battery. The energy stored in the capacitors is

A charged particle of mass \(m\) and charge \(q\) is released from rest in an electric field of magnitude \(E\). The kinetic energy of the particle after time \(t\) second is

The electric potential is +100 V at a distance of 10 cm from a point charge \(q\). Then, \(q\) is equal to

Force between two identical charges placed at a distance of \(r\) in vacuum is \(F\). Now a slab of dielectric of dielectric constant 4 is inserted between the charges. If the thickness of the slab is \(r/2\), then the force between the charges will become

An electric dipole is placed at an angle of 30\(^\circ\) with an electric field of intensity \(2 \times 10^5\) N C\(^{-1}\). It experiences a torque equal to 4 Nm. The charge on the dipole if the dipole length is 2 cm.

Two identical air core capacitors are connected in series to a voltage source of 15 V. If one of the capacitors is filled with a medium of dielectric constant 4, the new potential across this capacitor is