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A piece of magnetic material that retains its magnetic properties after it is removed from a magnetic field.

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Answer: d

Explanation: Unscrew one light, if the others remain on it is a parallel circuit.

User Adam Hassan
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2 votes

Answer:

Ferromagnetic materials

Step-by-step explanation:

Ferromagnetic materials are highly susceptible to an external magnetic field. They show a strong magnetic field attraction and can maintain their magnetic properties while suppressing the external field.

User Vivasvan Patel
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