The electric field strength between two charges -5q and +2q, separated by 50 cm. is zero atDeselect Answer

There is a charged metal sphere and thin circular plate. Distribution of charge around the surface isDeselect Answer

The electrostatic charges
(i) are conserved
(ii) are quantized
(iii) have circular fields around it
(iv) occurs in pairs

Which of the above are correct?Deselect Answer

E=0 between any two charges on the line joining them but not in between the charges. The magnitude and sign of the charges and location of the null point areDeselect Answer

Arrange the following forces in descending order of their strength
i) Electromagnetic
ii) Nuclear
iii) Gravitational
iv) ElectrostaticDeselect Answer

A pith hall of 10 g carries a charge of 10 μC What must be a charge on a ball 
placed 10 cm directly above which will hold the pith ball in equilibrium?Deselect Answer

A point charge of +3.0 x 10^-6 coulomb is 12 cm from a second point charge of -1.5x 10^6 coulomb. The magnitude and direction of the force on each charge isDeselect Answer

Two positive charges 10μ coulomb and 15μ coulomb are separated by a distance of 10 cms with a dielectric of alcohol. Find the force between them. ε of alcohol is 20Deselect Answer

A conductor and an insulator are heatedDeselect Answer

The electric field between two large parallel plates of area 1 m^2 separated in free space by 5 cm and carrying opposite charges is 155 N/C. Find the charge on the platesDeselect Answer

A charged rod attracts bits of uncharged paper. After touching the rod, they jump violently away from it becauseDeselect Answer

Between a hollow and solid metal sphere, charges resideDeselect Answer

The electric field strength of a chargeDeselect Answer

When charges are applied to a gold leaf electroscopeDeselect Answer

The unit of ε, the permittivity of free space isDeselect Answer

A body can hold electrostatic charge, when it is anDeselect Answer

A lightning conductor on top of a building is made into a pointed spike becauseDeselect Answer

Time of ascent and time of descent are always in the ratio …………….. for a projectile fixed at some angle with the horizontalDeselect Answer

There are two positive charges separated by a distanceDeselect Answer

Two charges of unknown sign and magnitude are a distance d apart. The electric field strength is zero at a point joining them.Deselect Answer

The magnitude and direction of the electric field balancing the weight of electron isDeselect Answer

A charged plate is touched by a metal rod standing on a wooden platform.Deselect Answer

An electron enters an electric field located over a limited space with a finite velocity. The electron willDeselect Answer