Current density , conductance and electrical conductivity – In this topic we will discuss about what is Current density , conductance and electrical conductivity ? and also the relation between them . Before to learn about this topic students must have to know about Drift velocity , Ohm’s law , resistance and resistivity ( without […]
Colour code for carbon resistor – In this topic we will discuss about Colour code for carbon resistor .In which we will know that how can we find the value of carbon resistor . Before to know about this topic Colour code for carbon resistor students must have to learn about resistance and resistivity . […]
Thermistors and superconductor – what do you mean by the term Thermistor and superconductor ? How a Thermistors is different from ordinary resistance and what are the applications of Thermistors and super-conductors? Before to learn about this topic Thermistors and superconductor , students must have to learn about resistance and resistivity; To learn about resistance […]
Electrical resistance and resistivity In this topic we will discuss about what is Electrical resistance and resistivity (specific resistance). On what factors Electrical resistance and resistivity depends ? And some plot of resistivity with temperature. Electrical resistance – It is the property of a conductor to resist the flow of current through it or electrical […]
Ohm’s law proof and limitations of Ohm’s law in this topic we will discuss about Ohm’s law proof and limitation of Ohm’s law , in which we will prove Ohm’s law with the help of drift velocity , and graph [V(potential) Vs I(current) ] for non-Ohmic resistance . Ohm’s law and deduction of Ohm’s law […]
Drift velocity and its relation with current – In this topic we will discuss about drift velocity and how it is related with electric current flowing through a conductor. Drift velocity and its relation with current – As we know a metal contains large numbers of free electrons . At room temperature these electrons moves […]
Electromotive force (EMF) of the cell. In this topic we will discuss about what is Electromotive force (EMF) of the cell and it is different from potential difference . As we know electric current flows through a complete closed circuit ,when there is an source of external force which can bring the ions from low […]
OBJECTIVE QUESTIONS OF CURRENT This topic provide important objective questions for electric current it will be very important for the students preparing for class 12th board examination or JEE/NEET For which of the following dependence of drift velocity ʋ on electric field E is ohm’s law obeyed? (a) ʋ ꭀ E (b) ʋ = constant […]
Define 1 Ampere This topic only explain the term definition of Ampere ( which is explain in different-different type . Students can learn it according to there needs. ) Ampere is the basic unit of electric current . It is named after Andre-Marie -Ampere a French scientist born in 1775 . He also known as […]
ELECTRIC CURRENT or CURRENT ELECTRICITY electric current – Electric current – When electric charges is in motion , they constitute what is called an electric current . electric current is defined as the rate of flow of charge through an area of the conductor . if Q is the charge flows through a conductor […]