Question

What does the magnetic field lines pattern inside the solenoid indicate how can this can be utilised to make electromagnet state any two ways by which the strength of electromagnet can be increased?

Answer 1

magnetic field lines is that these curved path of lines along which, due to force act on them in the magnetic field....magnetic field is directly proportional to current.... and strength of the magnetic field also....
due to this it can be utilized to make electromagnet....
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