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ICSE Class 10 Physics Question 33 of 136

Electro-magnetism — Question 12

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Question

Question 12

State two advantages of an electromagnet over a permanent magnet.

Answer

An electromagnet has the following advantages over an electromagnet —

  1. An electromagnet can produce a strong magnetic field.
  2. The strength of the magnetic field of an electromagnet can easily be changed by changing the current (or the number of turns) in the solenoid.