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## SELF-INDUCTION

Explain the term self-induction of a coil Self – Induction – It is the property of an electric circuit or coil by virtue of which it opposes any change of flux or current in it by inducing a current in itself is called self- induction. In another words we can say “self-induction is the inertia […]

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## What is electric current

What is electric current What is electric current ? what is its unit ? define Ampere. 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 […]

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## Faraday’s law of electromagnetic induction

Faraday’s law of electromagnetic induction Electromagnetic induction – As we know when electric current passes through a conductor then magnetic field developed across the conductor , first discovered by Oersted . But Michael Faraday found its converse is also possible i.e. Whenever magnetic field changes around a coil ( and hence magnetic flux linked  across […]

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## USES OF POTENTIOMETER

USES OF POTENTIOMETER Uses of potentiometer – Measurement of emf of cell-         Let , E is the  emf of  driver cell  and ,  E1  is the emf of cell to be measured Here potential gradient K= [ {E / (R+r)} r]/l . Let l1  is the length of the wire from […]

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## POTENTIOMETER

POTENTIOMETER THIS TOPIC EXPLAIN ABOUT THE POTENTIOMETER  Potentiometer – An instrument used to measure accurately the EMF or potential difference is called potentiometer. Principle– Its working based on the principle that the potential drop across a conductor is directly proportional to the length of the conductor , if constant current passes through the conductor having […]

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## MOVING COIL GALVANOMETER

In moving coil galvanometer we will learn about the working theory of a galvanometer and its conversion from galvanometer to ammeter and voltmeter To read the complete topic click here- Moving Coil Galvanometer

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## CYCLOTRON

CYCLOTRON In this topic we will, discuss about working of cyclotron , its principle, construction and its limitations.  (** this topic is removed from the syllabus of class 12th, board examination).To know the complete syllabus click on the given link- Before to know about the cyclotron students must know  Force Acting on a Charge Particle […]

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## Biot-Savart’s law

State and explain Biot-Savart’s law In this topic we will discuss about Biot-savart’s law and magnetic field at a point due to finite current carrying wire or conductor. Biot- Savart law – Biot-Savart’s law explain the magnetic field due to small current carrying element As we know , whenever the current passes through a conductor […]

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## What is Ampere circuital law

Ampere circuital law – After the discovery of Oersted and Biot-Savart, Ampere found a useful relation between magnetic field and electric current.     [ In the case of all basic laws of physics , Ampere’s law can’t be derived , its validity is based on the correctness of the result.] . According to Ampere circuital law […]

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## Physics Post 2

What is Lorem Ipsum? Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also […]