You have been provided with a solenoid AB. 1. What is the polarity at end A?

Question

You have been provided with a solenoid AB.

1. What is the polarity at end A?

2. Give one advantage of an electromagnet over a permanent magnet.

Answer 1

1. Polarity at the end A is NORTH pole .

2. An electromagnet’* strength can be increased by increasing the flow of current in the coil, which is not possible in case of a permanent magnet.