Which of the following is the main difference between electromagnets and bar magnets?

مندرجہ ذیل میں سے کون سا برقی مقناطیس اور بار میگنےٹ کے درمیان بنیادی فرق ہے؟

Electromagnets are stronger than bar magnets

Bar magnets are permanent, but electromagnets are temporary

Electromagnets are used in motors, but bar magnets are used in generators

Electromagnets need electricity but bar magnets do not need electricity

Electromagnets require an electric current to generate a magnetic field.
Whereas bar magnets are permanent magnets that do not require electricity to exhibit magnetism.
This is the main difference between the two types of magnets.