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Subject :NSO    Class : Class 7
The given diagram shows an electromagnet in which current is flowing. Which of the following statements about the strength of the magnetic field at points P, Q and R is correct?

magnetic strength is strongest at the poles and weakest in the centre

Ans 1:

Class : Class 9
I probably thought that the answer would be stronger at p and r and weaker at q , because i used the sae concept as when it comes to permanent or natural magnet , but in elctromagnet , which i later found , it is totally opposite. The Poles are weakest and and at the center it is strongest

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