If conduction in material results only from the electron movement from valence to conduction band, it is called an intrinsic…
The specific heat capacity of a solid in the form of a metal block can be determined by an electrical…
The molecules of the liquid have an average velocity or average kinetic energy which increases with temperature. Molecules near the…
Molecules of solid are in fixed position in the crystalline structure. They are held together by intermolecular forces. This constraint…
Two forms of energy loss in a transformer are: 1. eddy current 2. heat loss (1²R) / Joules heat or…
Two electrical devices whose operation is based on the laws of electromagnetic induction are: i. the transformer ii. the generator…
Lenz’s law stats that: The induced current or (E.M.F.) always flows in such a direction as to oppose the change…
Faraday’s Law of electromagnetic induction states that: i. Whenever there is a change in the magnetic flux linked by a…
Doppler’s effect can be defined as the change in the frequency of sound heard by an observer due to the…
An echo is the sound heard after the reflection of the sound waves from a plane solid surface (hard surface).…