Bell Ringer W11.3_Electromagnetic Forces

Front

What is the region around a charged particle where electric force is exerted on other charged particles?

Back

Electric field.

Front

True or False: The more loops in a coil of wire around the core of an electromagnet, the stronger the magnetic force.

Back

True.

Front

What do both electromagnets and permanent magnets have in common?

Back

They have a north pole and a south pole.

Front

Which statement about the forces between charged objects is NOT true?

Back

As the distance between charged objects decreases, the electric force between them decreases.

Front

If the distance between two charged objects increases, what happens to the electric force between them?

Back

It decreases.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is a permanent magnet?

Back

A magnet that maintains its magnetic properties without the need for an external power source.

Front

What happens to the electric force when the amount of charge on an object increases?

Back

The electric force increases.

Front

What is the relationship between electric charge and electric force?

Back

Like charges repel each other, while opposite charges attract.

Front

What is the formula for calculating electric force between two charged objects?

Back

F = k * (|q1 * q2| / r^2), where F is the force, k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.