Question

In which case of comparing solenoid and bar magnet there is no exact similarity?

Options

• moving a small compass needle in the neighbourhood of a solenoid enables tracing the flux lines

• solenoid can be broken into two weaker solenoids

• flux lines enter one end of a solenoid

• there is a current entering and a current leaving a solenoid

Answer 1

There is a current entering and a current leaving a solenoid.

Explanation:

As the current direction changes, the solenoid will change the field direction and the magnetic pole polarity. The bar magnet, on the other hand, will always have the same poles and will not change.