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12th Notes

Thermistors and superconductor

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 […]

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12th Notes

Electrical resistance and resistivity

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 […]

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12th Notes

Ohm’s law proof and limitations of Ohm’s law

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 […]

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12th Notes

Drift velocity and its relation with current

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 […]

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12th Notes

Electromotive force (EMF) of the cell

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 […]

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12th Notes

Complete notes of electrostatics

Complete notes of electrostatics –   Here complete notes on electrostatics is provided by physics classes by Nayan jha . This notes are based on CBSE  Delhi syllabus . This is the combination of all the topics already provided on this website , which can be studied by the students one by one ( individually […]

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12th Notes

Capacitance of parallel plate capacitor with conducting and dielectric slab.

Capacitance of parallel plate capacitor with conducting and dielectric slab. Capacitance of a parallel plate capacitor with a conducting slab – Let A is the area of plates and d is the separation between them is d then capacitance C0= ϵ0A/d . Let Q is the charge on the plates of the capacitor. When a […]

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12th Notes

Non-polar and polar dielectrics

Non-polar and polar dielectrics – In this topic we will discuss about Non-polar and polar dielectrics and dielectric polarization with electrical susceptibility. Non polar and polar dielectrics  – As we know the dielectrics are insulating material which transmit electric effect without conducting electricity . Dielectrics is of two types , Non-polar Dielectrics and polar Dielectrics […]

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12th Notes

Common potential and loss in energy on shearing charges .

Common potential and loss in energy on shearing charges . Before to know about the topic Common potential and loss in energy on shearing charges .student must have to know about Energy stored in the capacitor and electrostatic potential . To know about energy stored in a capacitor click here- To know about the electrostatic […]

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12th Assignments 12th Notes

Energy stored in a capacitor and energy density

Energy stored in a capacitor and energy density . Before to know about the Energy stored in a capacitor and energy density , student must have to know about capacitors . To know about the capacitor click here– In this topic we will discuss about the Energy stored in a capacitor and energy density, when […]