1. what is the difference between fleming's left and right hand rules?
2. what is use of solenoid?
Fleming’s Right Hand Rule is used to find the direction of the induced emf of a conductor moving in a magnetic field. This rule is also called the Generator rule.
The thumb, the first and the second fingers on the right hand are held so that they are at right angles to each other.
If the first finger points in the direction of the magnetic field and the thumb in the direction of the motion of the conductor then the second finger will point in the direction of the induced current in the conductor.
Fleming’s left hand rule can be applied to find the direction of the thrust on a conductor carrying a current in a magnetic field.
The rule is as follows: The left hand is held such that the thumb, index finger and middle finger are mutually at right angles to each other. The index finger represents the direction of the magnetic field. The middle finger represents the direction of the current. The Thumb represents the direction of the motion of the conductor.
A solenoid is an electrical component constructed by winding a long insulated wire in the form of a tightly packed helix.
Uses:
1. A solenoid can be used as an electromagnet when its core is filled with iron rod.
2. Solenoids are used in transmitter and receiver circuits of radio devices for generating the required frequency of the electric signal.