Question
Wed August 24, 2011 By:

Can you please give me the basic principles between the Solenoid and the Torroid?

Expert Reply
Wed August 24, 2011
Solenoid or toroid are based on 'magnetic effect of current'.
Whenever a current is passed through a solenoid, one of its end acquires north polarity and the other end acquires south polarity and hence it behaves like a bar magnet.
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