State any two advantages of electromagnets over permanent magnets

Electricity and Magnetism (10)

State any two advantages of electromagnets over permanent magnets.

Answer

Permanent Magnet

  1. Magnetic Strength cannot be easily altered
  2. Polarity cannot be reversed easily

Electromagnet

  1. Magnetic strength can be easily altered.
  2. Polarity can be reversed easily.
  • Exam Year: 2018