Magnetism and Electromagnetism Notes by Sir Danish Aziz
Important Easy Notes of Physics of Chapter No. 14: Magnetism and Electromagnetism written by Professor Mr. Danish Aziz Suib. These notes are very helpful in the preparation of Physics for students of the 12th class and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Definition of Electromagnetism
- Definition of Electromagnet.
- Definition of Magnetic Field
- Direction of Magnetic Field
- Definition of Magnetic Force
- Force on a charge moving in uniform magnetic field
- Force on a current carrying conductor in uniform magnetic field
- Force on a current carrying rectangular coil in uniform magnetic field
- Motion of a charged particle in uniform magnetic field
- The e/m ratio or electron by J.J. Thomson Method.
- State and Explain Biot and Sarart Law
- State and Explain Ampere's Law
- Applications of Ampere's Law
- State and Explain Solenoid
- Magnetic Field of Solenoid
- Magnetic Field of Toroid
- State and Explain Lenz's Law
- State and Explain Self Induction
- State and Explain Mutual Induction
- State and Explain Motional EMF
- State and Explain Transformer
- Types of Transformer: (i) Step- Up Transformer (ii) Step-Down Transformer
- Definition of Step- Up Transformer
- Definition of Step-Down Transformer
- Ratio of Output to the input voltage
- Efficiency of Transformer
- Power losses in Transformer
- Eddy Current losses ( Circulating Current Losses)
- Definition of Dynamo
- Definition of Generator
- Definition of A.C Generator
- A 100 turns coil in a generator has an area of 500 cm2 rotates in a field with B= 0.06 Weber/m2. How fast must the coil rotated in order to generate a maximum voltage of 150 volts.
- Definition of Magneto
- Definition of Alternators
- Definition of Stator and Rotor
- Definition of D.C Generator
- State the Commutator.
- Working of Commutator or D.C Generator.
- Definition of Electric Motor and D.C Motor.