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# Electricity & Megnetism

## difference between voltage and current in a circuit

What is voltage in electricity? “Voltage is the amount of energy per charge available to move electrons from one point to another in an electric circuit.”It is the driving force in electric circuits and is what establishes current.As you have seen,a force of attraction exists between a positive and a negative charge. A certain amount of energy must be exerted,in ...

## Capacitance of a capacitor formula with unit and examples

“Capacitance is the ability to store an electric  charge per unit of voltage across its plates of a capacitor .”It is denoted by C.That is capacitance is a measure of a capacitor’s ability to store charge.The more charge per unit of voltage that a capacitor can store,the greater its capacitance. Formula Its formula is given as: C=Q/V Where C is capacitance,Q is ...

## What is a capacitor?|types of capacitors with applications

“A capacitor is device that can store charge.”Apart from resistors and inductors a it is the other basic component commonly used in electronic circuits.It is a device which  has the ability to store charge which neither a resistor nor an inductor  can do , it opposes any change of voltage in the circuit in witch it is connected , it ...

## electric potential and potential difference formula and unit

”  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.” Electric potential formula 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 ...

## Gauss’s law for magnetism with formula and applications

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 electric flux through a closed surface and the net charge enclosed by the surface.It is applied to calculate the electric intensity due to ...

## Electric flux formula with SI unit and examples

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.It is a scalar quantity. SI ...