DIMENSIONS What is dimensions of a physical quantity?What are the uses of dimensions ? DIMENSIONS– The dimension of a physical quantity as the power to which the fundamental units have to raised to represent a derived units of the quantity. To see the video of dimensions click here As we know that derived units […]
METER-BRIDGE Question based on meter-bridge may be asked as ; What is meter-bridge ? How does it work? find the expression to find the value of unknown resistance using meter bridge. Meter-bridge is a devise used to know the value of unknown resistance. Principle -its working based on the principle of wheat-stone-bridge . See […]
MUTUAL INDUCTANCE OF TWO COAXIAL SOLENOID In this topic we will derive the expression for coefficient of mutual induction or mutual inductance of two coaxial solenoid MUTUAL INDUCTION OF TWO COAXIAL SOLENOID– Let us consider two coaxial solenoid P1P2 and S1S2 (as shown in figure). Let their common length is ‘l’ with cross-sectional area A […]
Mutual induction- In this topic students will study what is mutual induction and coefficient of mutual induction / mutual inductance? And what is the unit of mutual inductance Mutual induction- Let us consider two coils placed near to each other closely . One of the coil carries the battery is the primary coil and the […]
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 […]
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 […]
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 […]
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 […]
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 […]