Physics 7.2.5

Question 1

What do Loudspeakers & Headphones Convert Electrical Signals into?

Answer 1

Sound.

Question 2

Loudspeakers & Headphones Can Convert Electrical Signals into Sound Due to the…

Answer 2

Motor Effect.

Question 3

What Passes Through the Coil of a Loudspeaker? What does this Create?

Answer 3

An Alternating Current, A.C.. This Creates a Changing Magnetic Field Around the Coil.

Question 4

As the Magnetic Field is Constantly Changing Direction in a Loudspeaker (A.C.), the Force Exerted on the Coil will ___. This Creates…

Answer 4

Oscillate. Sound Waves.

Question 5

What can we do by Changing the Frequency of the Cone in a Loudspeaker?

Answer 5

We can Change the Frequency at which the Cone Vibrates. Higher Frequency = Higher Pitch Sound.

Question 6

Explain how ‘Loudspeakers’ Work: (3)

Answer 6

-Electric Motor with Axle Connected to the Speaker Cone.

-When Electric Motor Vibrates, the Cone Oscillates.

-These Oscillations Cause Sound Waves.