Electromagnetic Force

Front

What is an electromagnetic force?

Back

An electromagnetic force is a fundamental force that acts between charged particles, responsible for electric and magnetic interactions.

Front

What is a solenoid?

Back

A solenoid is a coil of wire that generates a magnetic field when an electric current passes through it.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current, often containing a ferromagnetic core.

Front

What is the role of a ferromagnetic core in an electromagnet?

Back

The ferromagnetic core enhances the magnetic field produced by the electric current, making the electromagnet stronger.

Front

What did Hans Christian Ørsted discover?

Back

Ørsted discovered that an electric current produces a magnetic field, demonstrating the relationship between electricity and magnetism.

Front

How does an electric current create a magnetic field?

Back

An electric current flowing through a wire generates a magnetic field that circles around the wire.

Front

What is the relationship between the number of coils in a solenoid and its magnetic field strength?

Back

Increasing the number of coils in a solenoid increases the strength of the magnetic field produced.

Front

What is the difference between a solenoid and an electromagnet?

Back

The main difference is that an electromagnet has a ferromagnetic core, while a solenoid does not.

Front

What is the advantage of using an electromagnet in an MRI machine?

Back

An electromagnet provides a more powerful magnetic field, allowing for a smaller size and less power consumption.

Front

What happens to the magnetic field strength when the current in a solenoid is increased?

Back

Increasing the current in a solenoid also increases the strength of the magnetic field.