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Electricity & Megnetism

Electrical energy examples

Electrical energy definition “Electrical energy is produced by moving electric charges commonly through a wire.”When charge moves from a higher electric potential to a lower potential,it delivers electric current.Thus,the process ,during which charges continuously move from a higher potential to a lower potential,becomes a continuous source of electrical.E. Examples of electrical energy Turbine runs generator to produce electrical energy when ...

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Ohm’s law formula with examples and problems

Ohm’s law states that: “The current flowing through a conductor is directly proportional to the potential difference across its ends provided the physical state such as temperature etc. of the conductor remains constant.” Ohm describes mathematically how voltage,current and resistance in a circuit are related.It is used in the equivalent form depending on which quantity you need to determine.In this ...

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electrical resistance in circuit with factors affecting on resistance

What is the definition of resistance in physics? “Resistance is the property of material that restricts the flow of electrons.”When there is current in a conductive material ,the free electrons move through the material and occasionally collide with atoms.These collisions cause the electrons to lose some of their energy,and thus their movement is restricted.This restriction varies and is determined  by ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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Types of electric charges with formula and examples

Electric charge is defined as:”An electrical property of matter that exists because of an access or a deficiency of electrons.” Its formula is given as: Q =I × t Where Q is the total charge ,I is the amount of current and t is the time. Electric charge examples If you walk across a carpet in dry weather,you can draw a ...

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