a) Give the two important parts of a moving coil loud speaker
b) Give the working principle of a moving coil loudspeaker
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Explanation:
a
1) Magnet: The magnet provides the fixed magnetic field against which the field from the coil operates. The magnet is typically made from ferrite or powerful neodymium.
(2) Chassis / frame : The moving coil loudspeaker is generally built on a circular frame - occasionally these may also be elliptical
b....The moving coil loudspeaker uses the magnetic effect generated by a flowing current as the basis of its operation. When a current flows in a wire, a magnetic field appears around it. When the wire is wound into a coil, the effect is increased
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