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Electricity & Megnetism

Difference between electric potential and potential difference

”  Electric potential at a point in an electric field is equal to the amount of  work  done in bringing a unit positive charge from infinity to that point.”If  W  is the work done in moving a unit positive charge from infinity to a certain point in the field ,the electric potential V at this point would be given by: ...

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Gauss’s law:Derivation,examples and applications

What is Gauss’s law?                                        Gauss’s law states that: “The total electric flux through any closed surface  is equal to 1/ε0 times the total charge enclosed by the surface.” It is given by Karl Friedrich  Gauss ,named after him gave a relationship between ...

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Electric flux:formula ,examples,problem & solutions

What is Electric Flux? “Total number of field lines passing through a certain element of area is called flux”. It may also be defined as “The scalar product of electric field intensity E and vector area  A“. Electric flux formula It is denoted by Greek letter Φ. Φ=E.A Φ=EAcosθ Where θ is the angle between E and A.Electric flux is a scalar quantity. ...

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Electric charge:types,examples and properties

What is the definition of  Charge in physics? Electric charge is defined as:”An electrical property of matter that exists because of an access or a deficiency of electrons.” If you walk across a carpet in dry weather,you can draw a spark by touching a metal door knob.On a grander scale,lightning is familiar to everyone.Such phenomena suggest the vast amount of ...

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coulomb’s law of electrostatic in vector form with examples

What does Coulomb’s law mean? “Coulomb’s law states that  force of attraction or repulsion between two electric charges is directly proportional to their magnitudes and inversely proportional  to the square of distance between them”.It is mathematically explained as: Charles Agustin Coulomb (1736-1806) measured electrical attractions and repulsions  quantitatively and deduced the law that governs them.His apparatus,shown in fig. This figure ...

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