Question

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

Answer 1

Answer:

Ferromagnetic materials

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.

Answer 2

Answer: d

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