Electromagnets, Motors and Generators

Front

What is electromagnetic induction?

Back

The process of creating a current in a circuit by changing a magnetic field.

Front

What does a transformer do?

Back

A transformer transforms voltage.

Front

What is an electromagnet?

Back

A device that generates a magnetic field when an electric current passes through it.

Front

How does adding more coils affect an electromagnet's strength?

Back

The strength of an electromagnet increases as more coils are added.

Front

What is the function of a motor?

Back

A device that transforms electrical energy into mechanical energy.

Front

What is the difference between a generator and a motor?

Back

A generator converts mechanical energy into electrical energy, while a motor converts electrical energy into mechanical energy.

Front

What is the principle behind the operation of electric motors?

Back

Electric motors operate on the principle of electromagnetic induction and the interaction between magnetic fields and electric currents.

Front

What is the role of magnetic field lines in transformers?

Back

Magnetic field lines are used to transfer energy between the primary and secondary coils in a transformer.

Front

What happens to the current in a circuit when the magnetic field changes?

Back

The current in the circuit is induced to change due to electromagnetic induction.

Front

What is the relationship between voltage and current in a transformer?

Back

In a transformer, the voltage is transformed while the current is inversely affected based on the turns ratio.