Magnetism Quiz

Magnetic field lines around a bar magnet spread out from one pole and curve around to the other.

• True

• False

Every magnet, regardless of its shape, has two magnetic poles.

• True

• False

Magnetic poles that are unlike attract each other.

• True

• False

What is one difference between a galvanometer and an electric motor? In an electric motor, the armature spins continuously.

• A galvanometer measures current, while an electric motor converts electrical energy into mechanical energy.

• A galvanometer has a fixed armature, while an electric motor's armature spins continuously.

• A galvanometer is used in circuits, while an electric motor is used in vehicles.

• A galvanometer requires a battery, while an electric motor does not.

The type of current produced by a battery is direct current.

• True

• False

You can increase the strength of an electromagnet’s field by using a stronger ferromagnetic material for the core.

• True

• False

As Earth’s magnetic poles move, the magnetic declination in a given location will change.

• True

• False

An electric current produces a magnetic field.

• True

• False

Electric current from a generating plant is

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A maglev train floats above its rails due to _________________.

• Gravity

• Friction

• Magnetism

• Air pressure