List of practice Questions

The working principle of a dynamo is based on:
A magnet is situated near a closed conductor. Current can be produced in the conductor if:
The value of current obtained in a moving coil galvanometer is proportional to:
If \( n \) equal resistors are first connected in series and then in parallel, the ratio of maximum to minimum resistance will be:
To increase the sensitivity of a potentiometer:
Kirchhoff's second law of electricity is related to:
Which one of the following is NOT a unit of magnetic field?
The value of \((p_0 g q)^{1/2}\) is:
An electron of charge \( e \) moves parallel to uniform lines of force in a magnetic field \( B \) with velocity \( v \). The force acting on the electron is:
Picofarad is the unit of:
The capacity of any condenser does not depend upon:
The capacity of a spherical conductor is \(1.0\) pF. Its radius will be:
The dielectric constant of a metal is:
Which of the following is blocked by a capacitor?
Two bulbs of 40 W and 60 W are connected to a 220 V source. The ratio of their resistances will be:
The resistance of a wire is 500 \(\Omega\). Its electrical conductivity will be:
Two equal and opposite charges of 5 coulomb are kept mutually at a distance of 50 cm. The electric dipole moment of the system is:
On moving from the surface of a charged metallic sphere to the center of the sphere, the electric field:
If \( n \) electric dipoles are situated inside a closed surface, the total electric flux coming out from the closed surface will be:
In broad-side-on position, the electric potential due to an electric dipole is:
An electron is accelerated through a potential difference of 5 volts. The energy gained by the electron will be:
The relation between electric field \( E \) and electric potential \( V \) is:
The electrostatic energy of the system made by two electric dipoles kept at a distance \( r \) is proportional to:
Describe the cultivation of groundnut under the following heads: (a) Selection of soil and preparation
(b) Two improved varieties
(c) Time of sowing and seed rate per hectare
(d) Manure and fertilizer per hectare
(e) Yield per hectare
Describe the cultivation of tomato under the following heads: (a) Selection of soil and preparation
(b) Two improved varieties
(c) Time of sowing and seed rate per hectare
(d) Manure and fertilizer per hectare
(e) Yield per hectare