Physics homework - is this right?

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LiviL97
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I know this is probably easy but I am bad at physics...plus I'm tired. Anyway, did I get it right?

A variable electrical signal is passed through a coil that is held in a magnetic field from a permanent magnet.

a varying force occurs between the electromagnet and the permanent magnet.

the coil becomes an electromagnet its strength varying with the current (2nd one maybe?)

this makes the coil move backwards and forwards to the same pattern of the electrical signal

the coil moves a paper cone in and out

the moving paper cone makes air vibrate, creating sound waves.

I should pay more attention in Physics
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uberteknik
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(Original post by LiviL97)
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I know this is probably easy but I am bad at physics...plus I'm tired. Anyway, did I get it right?

A variable electrical signal is passed through a coil that is held in a magnetic field from a permanent magnet.

a varying force occurs between the electromagnet and the permanent magnet.

the coil becomes an electromagnet its strength varying with the current (2nd one maybe?)

this makes the coil move backwards and forwards to the same pattern of the electrical signal

the coil moves a paper cone in and out

the moving paper cone makes air vibrate, creating sound waves.

I should pay more attention in Physics
Swap the italicised sentences around and you are done.
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