Electromagnetic Flashcard

Front

Which device can increase or decrease the voltage of an alternating current?

Back

transformer

Front

The direction of the electric current in an alternating current

Back

changes in a regular pattern

Front

In order for the electromagnetic coil in a motor to keep turning, the current must ________.

Back

change direction

Front

Electric current should pass through a ________ after being transmitted by a power plant and before it enters your home.

Back

step down transformer

Front

The ______ are regions where the magnetic force exerted by a magnet is strongest.

Back

magnetic poles

Front

The interaction between magnets and magnetic materials is called ________.

Back

magnetism

Front

How is electricity generated for homes?

Back

Steam pushes turbine blades in a generator which changes the mechanical energy into electrical energy.

Front

Which of the following devices produces electric current? stereo speaker, electric motor, galvanometer, generator

Back

generator

Front

North poles of magnets always attract _______.

Back

south poles

Front

Which of the following elements is magnetic? aluminum, lead, iron, tin

Back

iron