Alternating Current Class 12 Notes Chapter 7 1. Alternating Current (AC) It is the current which varies in both magnitude as well as direction alternatively and periodically. I = I0 sin ωt or I = I0 cosωt where, I0 = peak value or maximum value of AC. 2. Effective Value or rms Value of AC It is defined as the value of AC over a complete cycle which would generate same amount … [Read more...]
CBSE Notes for Quick Revision
CBSE Quick Revision Notes: One of the most important aspects when studying in class, is to take good revision notes. Students who take good NCERT revision notes generally are able to score good marks as they contain the intricacies and little details that could not be covered in the NCERT textbook being used. The NCERT is the council that conducts the CBSE board, which is a nationwide curriculum followed by millions of students in the country. Similarly, the ICSE is overseen by the CISCE. Students in both these boards have similar subjects and LearnCBSE.in provides revision notes that can be used according to the students’ requirements. Revision notes can be easily downloaded in a PDF directly with the link.
The revision notes are available from class 3rd to 12th for all their subjects.Revision Notes is applicable for all the board like CBSE, UP Board, MP Board, Gujarat Board, Bihar, Uttarakhand, KSEEB, Kerala and all other boards who are following the New Updated NCERT Books as a course book.
Communication Systems Class 12 Notes Chapter 15 Topic 1 Communication 1. Communication Communication is the act of transmission and reception of information. 2. Communication System A system comprises of transmitter, communication channel and receiver. A block diagram of a generalised communication system is shown as below:3. Transmitter It consists of transducer/signal … [Read more...]
Electromagnetic Induction Class 12 Notes Chapter 6 1. Magnetic Flux The magnetic flux linked with any surface is equal to total number of magnetic lines of force passing normally through it. It is a scalar quantity.2. The phenomenon of generation of current or emf by changing the magnetic flux is known as Electromagnetic Induction EMI). 3. Faraday’s Law of Electromagnetic … [Read more...]
Semiconductor Electronic: Material, Devices And Simple Circuits Class 12 Notes Class 12 Notes Chapter 14 1. Metals They possess very low resistivity or high conductivity. ρ ~ 10-2.10-8 Ωm, σ ~102. 108 Sm-1 2. Semiconductors They have resistivity or conductivity intermediate to metals and insulators. ρ ~ 10-5. 106 Ωm, σ ~ 10+5 .10-6 Sm-1 Types of Semiconductors Types of … [Read more...]
Magnetism And Matter Class 12 Notes Chapter 5 1. The magnetic dipole moment of a magnetic dipole is given by M = m × 2I where, m is pole strength and 2I is dipole length directed from S to N.The SI unit of magnetic dipole moment is A-m2 or J/T. It is a vector quantity and its direction is from South pole to North pole. 2. Coulomb’s Law in Magnetism Magnitude of force … [Read more...]