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Difference between bipolar junction transistor (BJT) & field effect transistor (FET)

BJT and FET are electronic devices.The basic difference between BJT and FET is that bipolar junction transistor is the bipolar and current control device,while FET (field effect transistor) is the uni junction transistor.It is a voltage control device. The Difference between bjt and fet                            BJT     ...

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Capacitance of a capacitor

Capacitance of a capacitor is the ability of capacitor  to store an electric  charge per unit of voltage across its plates of a capacitor .Capacitance is find by dividing electric charge with voltage by the formula C=Q/V .Its unit is Farad. Formula Its formula is given as: C=Q/V Where C is capacitance,Q is voltage,and V is voltage.We can also find charge Q ...

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Relationship between voltage and current

Relationship between voltage and current is describe in equation of ohm’s law (V=IR).Voltage is the amount of energy per charge which is required to move electrons from one point to another,while current is the rate of flow of charges.Difference between voltage and current are given in the table below. What is voltage in electricity? “Voltage is the amount of energy ...

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Resistance definition in physics and electricity

What do you mean by resistance? “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 the type ...

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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.”There are two types of electric charge,positive charges and negative charges. 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 ...

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Difference between conductors and insulators with examples

The difference between conductors and insulators is that conductors are those materials that conducts electric current easily while insulators are those materials which do not conduct current easily. Conductors A conductor is a material that easily conducts electrical current.Most metals are good conductors.The best conductors are single element materials,such as copper(Cu),silver(Ag),gold(Au),which are characterized by atoms with only one valence electron ...

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Different types of rectifiers and their applications in daily life

What is Rectification? Conversion of alternating current into direct current is called rectification. Semiconductor diodes are extensively used for this purpose. How many types of rectification ? There are three common types of rectification: Half wave rectification Full wave rectification Full Wave Bridge Rectification Voltage multipliers rectification Half Wave Rectification An alternating voltage of Time period T is called input ...

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Kirchhoff’s voltage and current law with examples

What is Kirchhoff’s Voltage Law? Kirchhoff’s voltage law is a fundamental circuit law that states that the algebraic sum of all the voltages around a closed path is zero or, in other words,the sum of the voltage drops equals the total source voltage. Kirchhoff’s loop rule In an electric circuit, the voltages across the resistors(voltage drops) always have polarities opposite ...

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Types of logic gates

There are 7 types of logic gates which are: AND gate, OR gate, XOR gate, NAND gate, NOR gate, XNOR gate and NOT gate. Logic gates are electronic circuits that makes logic decisions.It has one output and one or more inputs. Output signal appears only for certain combinations of input signals. Logic gates are the building blocks from which most of the digital systems are built ...

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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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