#4 ELECTROMAGNETISM Recap

Front

What is Electromagnetism?

Back

Electromagnetism is the branch of physics that deals with the interaction between electric charges and magnetic fields.

Front

What is a current-carrying coil?

Back

A current-carrying coil is a loop of wire through which electric current flows, creating a magnetic field around it.

Front

How does increasing the number of coils affect a motor's power?

Back

Increasing the number of coils in a motor enhances the magnetic field, resulting in a greater turning effect and more power.

Front

What role does voltage play in a motor's performance?

Back

Higher voltage increases the current flowing through the motor, which can enhance its speed and power.

Front

What is the effect of using a stronger magnet in an electric motor?

Back

Using a stronger magnet increases the magnetic field strength, which can lead to higher speed and efficiency of the motor.

Front

What is a generator?

Back

A generator is a device that converts mechanical energy into electrical energy by moving a conductor through a magnetic field.

Front

What happens when a magnet is moved inside a coil of wire?

Back

Moving a magnet inside a coil of wire induces an electric current in the coil due to electromagnetic induction.

Front

What is electromagnetic induction?

Back

Electromagnetic induction is the process of generating electric current in a conductor by changing the magnetic field around it.

Front

What type of energy transformation occurs in an electric motor?

Back

An electric motor transforms electrical energy into mechanical energy.

Front

What is the principle behind electric motors?

Back

Electric motors operate on the principle that a current-carrying conductor in a magnetic field experiences a force.