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Author Archives: admin

Maxwell’s equations:Derivation in integral and differential form

4 Maxwell equations The basic equations of electromagnetism which are collection of Gauss’s law for electricity ,Gauss’s law for magnetism ,Faraday’s law of electromagnetic induction and Ampere’s law for currents in conductors are called Maxwell’s equations. These equations are part of comprehensive and symmetrical theory of electromagnetism,which is essential to understand electromagnetic waves,optics,radio and TV transmission,microwave ovens and magnetically levitated ...

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Difference between BJT and FET in tabular form

Difference between bjt and fet                            BJT                                  FET 1:BJT (bipolar junction transistor ) is the bipolar device. 1:FET (field effect transistor) is a uni junction transistor. 2:Its operation depends on both majority ...

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Difference between mechanical and matter waves with examples

Mechanical waves The waves which required any medium for their propagation are called mechanical waves. Examples of mechanical waves Sound waves Water waves Vibration of string Waves produced on the surface of liquid and solid. Ultrasonic waves Spring waves Slinky waves Properties of mechanical waves These waves required medium for propagation or to travel. Their speed depend on medium in ...

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Dimensional analysis physics examples and practice problems

Dimensional analysis in physics All the physical quantities can be expressed in terms of seven fundamental quantities.The powers to which these fundamental physical quantities be raised are termed as “dimensions”.Using the method of dimensions called dimensional analysis. Each base quantity is considered a dimension expressed by specific symbol written within square brackets.It stands for qualitative nature of physical quantity.For example ...

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Difference between dot product and cross product in tabular form

Difference between dot product and cross product   Dot product or scalar product  Cross product or vector product If the product of two vectors is a scalar quantity,the product is called scalar product or dot product. If the product of two vectors is a vector quantity then the product is called vector product or cross product. The dot product is ...

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dot product and cross product of vectors in physics with examples

dot product of two vectors When two vectors are multiplied with each other and answer is a scalar quantity then such a product is called scalar product or dot product of vectors. A dot (.) is placed between vectors which are multiplied with each other that’s why it is also called “dot product”. Scalar = vector .vector Vector dot product ...

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Difference between conservative and non conservative forces with examples

Conservative force definition The force which allows the opportunity of two way conversion among potential and kinetic energies is said to be conservative force. Conservative forces examples Gravitational forces Magnetic force Electrostatic force Elastic spring force Electric force Non conservative force definition The force is called non conservative if work is done by the force is dependent on path followed ...

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Resistance in series and parallel circuits

Combinations of resistance in electric circuit There are two possible combinations of resistance in electric circuits: Series combination Parallel combination Series combination In series combination,resistors are connected end to end and electric current has a single path through the circuit.This means that the current passing through each resistor is the same. The current is the same through all points in ...

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Photodiode applications with working and uses

What is Photodiode? The photo diode is the device which operates in reverse bias.The photo diode has small transparent window that allows light to strike the pn junction. Photodiode working We know that when reverse biased ,the rectifier diode has a very small leakage of current.The same is true for photodiode.The reverse biased current is produced by thermally generated electron ...

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Artificial gravity physics with formula and applications

What is artificial gravity? Weightlessness in space crafts or satellites is highly is highly convenient to an astronaut in many ways.For Example he can not drink in it.It is very difficult for him to perform experiments. In order to overcome these difficulties an artificial gravity is created in the space craft by spinning it around its own axis so that ...

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