Answer to Question #318698 in Optics for mcc

Question #318698

Our speakers use 200 mA of current at maximum volume. The voltage is 12V. The current is used to produce a magnet which is used to move the speaker cone. Find the resistance of the electromagnet.

Expert's answer

$R=\frac{V}{I}=\frac{200}{12}=60\Omega$

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