Loudspeakers and Headphones 0.0 / 5 ? PhysicsElectromagnetismGCSEAQA Created by: 2020gcses!Created on: 11-01-20 21:55 What is present in a loudspeaker? coil, a.c supply, cone and a permanent magnet 1 of 13 How does a loudspeaker work? Step 1 Current passes through coil, magnetic field produced 2 of 13 Step 2 Magnetic field from coil interacts with magnetic field from permanent magnet 3 of 13 Step 3 Magnetic field either attract/repel each other 4 of 13 Step 4-What does this cause? Cone to move 5 of 13 Step 6 Cone move in and out.Produces sound waves 6 of 13 If we change frequency of a.c supply? We change the frequency that the cone vibrates 7 of 13 Higher frequency means? Higher pitch sound 8 of 13 Lower frequency means? Lower pitch sound 9 of 13 If we increase the size of current? amplitude of vibration increases 10 of 13 As a result of this? Volume of sound is increased 11 of 13 Microphones are? Loudspeakers in reverse 12 of 13 What does induced mean? Forced 13 of 13
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