Question

You have been provided with a solenoid AB.
(i) What is the polarity at end A ?
(ii) Give one advantage of an electromagnet over a permanent magnet


I need proper solution not any kind of screenshots​

Answer 1

Answer:

(I) south is the polarity at end of A.

(ii) Electromagnet is used in motor.

Answer 2

Explanation:

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(i) North pole.

(ii) The magnetic field strength can be change in electromagnet. But not in permanent magnet