If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region of electric field of 80NC⁻¹ in the same direction as the velocity of mass then the velocity of mass […]
An electric dipole of moment ‘p’ is placed in an electric field of intensity ‘E’. The dipole acquires a position such that the axis of the dipole makes an angle θ with the direction of […]
If two charges +4e and +e are at a distance x apart, then at what distance charge q must be placed from +e, so that it is in equilibrium?
Options
(a) x/2 (b) x/3 […]
A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated by 1mm having a potential difference of 500 V. The charge on the drop is (g=10ms⁻²)
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A parallel plate condenser has a uniform electric field E(V/m) in the space between the plates. If the distance between the plates is d(m) and area of each plate is A(m²) the energy (joules) stored […]
Two capacitors having capacitances C₁ and C₂ are charged with 120V and 200V batteries respectively. When they are connectd in parallel now, it is found that the potential on each one of them is zero. […]
Equal charge q each are placed at the vertices AQ and B of an equilateral triangle ABC of side a. The magnitude of electric intensity at the point C is
Options
(a) q/4πε₀a² […]
Two parallel metal plates having charges +Q and -Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will […]
The electric potential V at any point (x,y,z) all in meters in space is given by V = 4x² volt. The electric field at the point (1,0,2) in V/m is
Options
(a) 8 […]
Two identical capacitors are first connected in series and then in parallel. The ratio of equivalent capacitance is
Options
(a) (1:1) (b) (1:2) (c) (1:3) (d) (1:4)
Correct Answer:
(1:4)
Explanation:
No explanation […]
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