Page 1 :
In Ir, > Inductor is a device which works on the principle of self Induction., , STOOL > Symbol, , > An inductor is an insulated copper wire wound in a helical shape., , , , > Inductors are coils used to oppose the changes in electric current in a circuit., They are used to reduce current in a circuit to the desired value without loss of, power., , , , , , , , > Inductors are widely used in AC circuits. Why?, * Inductors are used in the electronic circuits, to control and decrease current, without power loss., , > If resistors are used instead of inductors, what will be the disadvantage?, * Electrical energy is lost in the form of heat., , > Inductors are not used in DC circuits. Find out the reason?, * Back emf is not produced as the flux formed by the current has no variation., So current control by inductor in DC is not possible., , Assignment, , , , soft iron, —B—, b.» =e: b), -—, eel act, b LS oy, 5 J “AW, , , , , , a) Compare the light intensity of the bulbs., , b) What is the phenomenon due to which the intensity of the bulb deceases?