a. Lead b. Tellurium c. Pollonium d. Iron Answer: (b)Â Tellurium Metals are good conductors of electricity. Therefore, lead and iron have low... View Article
An inductor is an electronic component that is capable of storing electric energy in the form of magnetic energy. When a voltage is applied... View Article
The net charge inside a conductor is zero. The total charge of a conductor resides on its surface ,as charges tend to attain equilibrium. As a... View Article
Planck’s constant describes the behaviour of particles and waves on an atomic scale. The dimension of Planck’s constant is the product of energy... View Article
Gaussian surface is an enclosed surface in a three dimensional space through which the flux of a vector field is calculated (gravitational field,... View Article
The property of subatomic particles that causes it to experience force when kept in an electromagnetic field is known as electric charge. There... View Article
Conduction and convection are two modes of heat transfer. In conduction, the heat transfer takes place between two objects by direct contact. In... View Article
Galvanometer is an electric device that is used to measure small electric current by the deflection of a moving coil. The deflection is a... View Article
One of the quickest way to discharge a capacitor is by touching the two terminals of the capacitor together. This method of discharging is... View Article
In a uniform electric field, the field lines are straight, parallel and uniformly spaced. The electric field lines, however, can never form... View Article
The sound intensity is measured in units known as decibels (dB). Decibels are different from other standard units of measurement. Decibel scale... View Article
An electrical slip ring is a elecromechanical device that transmits electrical signals or current from a rotating interface to a stationary... View Article
A series RL circuit is a circuit that contains a pure inductance of L (Henry) connected to a pure resistance of R ohms in series. The total... View Article
Modulation index describes the extent to which modulation is done on a carrier signal. In an amplitude modulation, it is defined as the ratio of... View Article
A sound is a vibration that propagates as a wave of pressure, through a medium such as a gas, liquid or solid. When atoms are set in vibration... View Article
Nuclear binding energy is the energy that is required to break aprat the nucleus into component parts. We can consider a atom to be stable if... View Article
There are some important laws of radiation that describe the various characetristics of radiation. Kirchoff’s Law Kirchhoff’s Law states that... View Article
