1.
If the potential in a region is expressed as V= (3x +4y) in SI units, then the magnitude of electric field at point (0 m, 1 m, 0 m) will be:
2.
In which way to connect three condensers each of capacitance 1 μF in order to get the equivalent capacitance of (2/3) μF ?
3.
At what finite distance from a negative point charge (-q), the magnitude of electric field and electric potential is equal?
4.
What is the work done to move a point charge of 1 C from infinity to a point of potential 10 V?
5.
What is the electric field at a distance 5 cm from the centre of a hollow spherical conducting shell of radius 6 cm having a charge of 2 mC on its surface?
6.
An electrical charge 2 x 10⁻⁸ C is placed at the point (1, 2, 4) m. At the point (4, 2, 0) m, the electric
7.
Two concentric spherical shell have radii a and 2a. The charge on sphere of radius a is q and the charge on sphere of radius 2a is -q. What is the electric field at distance 3a from the centre of sphere?
8.
What is the Electric field and the electric potential inside a spherical shell having charge q on the surface and its radius is R?
9.
When a dielectric material is introduced between the plates of a charged capacitor, then electric potential between the plates will
10.
A point charge q is placed at the origin. Another charge -q is brought from infinity to a distance r from the point charge. The potential energy of the system is
11.
It is given 3 capacitors each of capacitance 6 μ F. Connect all these in such a way to get equivalent capacitance of 9 μ F.
12.
The net electric potential at the centre of a square of each side 'a' and the charges placed at each corner are +q, +q, -q and -q, is
13.
A charge q is placed at the origin. The electric potential at a position (î – k̂) m is (k=1/4πε₀)
14.
The electric potential along the direction of electric field
15.
The work done to move a charge on the equipotential surface
16.
The equipotential surfaces' spacing between a dipole
17.
The work done to rotate a dipole of dipole moment p from 0⁰ to unstable equilibrium in the uniform electric field of magnitude E is
18.
The work done by the conservative force is equal to
19.
The capacitance of a parallel platecapacitor in air is C₀ and the capacitance with completely filled dielectric is C. The electric field in air is E₀ and inside the dielectric, the net field is E. Then dielectric constant K is
20.
A conductor is completely filled between the gap of a parallel plate capacitor. Its capacitance is (d = separation of plates, t = thickness of conductor)
21.
The potential in a region is given as V = x². The electric field at point x = 1 cm is
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