MARKS DISTRIBUTION CLASS 12th PHYSICS- CBSE (CENTRAL BOARD OF SECONDARY EDUCATION) decided to follow new marking pattern for class 12th physics , students has to know it and prepare himself according to the new marking scheme. Important information for all the students of class 12th (science ) should have to know that marking scheme and […]
Author: Nayan Jha
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Errors of measurement
Errors of measurement- generally it is seen the measured value of a quantity is different from its actual value . this difference in the measured value and and the true value of a quantity is called error of measurement. Errors of measurement can be divided into following types- Systematic errors -Those errors whose causes are […]
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Significant figure
Significant figure In this topic we will discuss what is a significant figure ? how can we find the significant figure in the given values and what are the rules for counting significant figure ? Significant figure – It is the measured value of a physical quantity tell the number of digit in which we […]
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PARALLAX METHOD
PARALLAX METHOD – – Parallax method has been used for measuring distance of stars which are less than 100 light years away.(parallax is the name given to change in the position of an object with respect to the back ground , when the object is seen from the two different positions .) The diameter AB […]
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Definition of Ampere
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 […]
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ELECTRIC CURRENT
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 […]
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SELF-INDUCTION OF LONG SOLENOID
SELF-INDUCTION OF LONG SOLENOID SELF-INDUCTION OF LONG SOLENOID this topic is important for the class 12th board examination Self-inductance of long air-cored solenoid question may asked as – what do you mean by the term self-induction ? Find expression for the self-inductance of long air cored solenoid . Self-inductance of long air-cored solenoid – Suppose […]
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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 […]
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 […]
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 […]