Q. 14.0( 69 Votes )
State Flemings left-hand rule.
According to Fleming’s left-hand rule:
Hold the forefinger, the center finger and the thumb of your left hand at right angles to one another as shown in figure above. Adjust your hand in such a way that the forefinger points in the direction of magnetic fields and the center finger points in the direction of current, then the direction in which thumb points, gives the direction of force acting on the conductor.
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(a) State Fleming’s left hand rule.
(b) Write the principle of working of an electric motor.
(c) Explain the function of the following parts of an electric motor.
(i) Armature (ii) Brushes (iii) Split ring
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