Electromagnetic

1. The attractive flux connected with any surface is equivalent to aggregate number of attractive lines of power going through it.It is scaler quantity.S.I. unit of attractive flux is weber (Wb).

2. ELECTROMAGNETIC INDUCTION: The marvel of era of an electric current in a shut circuit from attractive flux connected with it is called electromagnetic prompting.

3. FLEMING'S RIGHT HAND RULE: Stretch the thumb,the first finger and the focal finger of right hand with the goal that they are commonly opposite to each other.If the main finger focuses toward the attractive field, the thumb point toward movement of the conductor, then the focal finger focuses toward the incited current.

4. Substituting CURRENT(ac) GENERATOR: A generator(or a dynamo) is a machine utilized for creating electric current by changing over mechanical vitality into electrical utilizing em induction.when the current delivered by a dynamo changes constantly in extent and intermittently in direction,several times per second,the current is known as exchanging current and the machine which produces it is known as the air conditioner generator.

5. Swirl CURRENTS: The coursing streams set up in mass bits of metal traveling through a magnatic field are called whirlpool ebbs and flows.

6. Common INDUCTION: The wonder of accepting currentt in a circuit by changing the current or flux in a neighboring circuit is called shared inductance.mutual prompting may likewise be characterized as the property of two circut by righteousness of which every circuit contradicts any adjustment in flux or strain of current moving through other circuit.

a) Mutual inductance of two circuits in numerically equivalent to the flux connected with one circuit when a unit current course through the other.

b) Mutual inductance of two circuit is numerically equivalent to the prompted emf set up in one circuit when the rate of progress of the current in the other is solidarity.

c) Mutual inductance of two circuits is said to be one Henry if a current changing at the rate of 1 amp/sec in 1 circuit actuates an emf of 1 volt in the other.

7. SELF INDUCTION: The property of an electric circuit by ethicalness of which it contradicts any change of flux or current in it by instigating a current in it self called self impelling.

8. LENZ'S LAW: The extremity of instigate emf is such that is tend to deliver a present that will make an attractive flux through the circuit ( or circle ).

9. FARADAY'S LAWS OF ELECTROMAGNETIC INDUCTION:

a) Whenever in a circuit, there is a change of attractive flux, an instigated emf is produced.The emflasts just for the ideal opportunity for which the flux is evolving.

b) The extent of the incited emf is straightforwardly corresponding to the rate of progress of attractive flux connected with the circuit.