Electric and Magnetic Forces

Front

What is the essential part missing from a circuit that won't work?

Back

Source of electric current.

Front

How can the strength of an electromagnet increase?

Back

Add more loops (coils) of wire around the core.

Front

What can make two magnets pull with LESS force?

Back

Move magnets farther apart.

Front

What is the flow of electricity through a conductor called?

Back

Current.

Front

Why does a balloon with a negative charge attract bits of paper?

Back

A charged object can make other objects move without touching them.

Front

What is resistance in an electrical circuit?

Back

Resistance is the opposition to the flow of electric current.

Front

What is voltage?

Back

Voltage is the electric potential difference between two points.

Front

What happens when you add more batteries in series to a circuit?

Back

The voltage increases, which can increase the current.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is the role of a conductor in an electric circuit?

Back

A conductor allows electric current to flow through it.