In the diagram XY is a long solenoid of insulated wire wound on a cardboard tube. PQ is a soft iron cylinder. The current is flowing in the wounded wire in the direction shown in figure. For this arrangement mark the correct statement.

In the diagram XY is a long solenoid of insulated wire wound on a card

1.	In the diagram XY is a long solenoid of insulated wire wound on a cardboard tube. PQ is a soft iron cylinder. The current is flowing in the wounded wire in the direction shown in figure. For this arrangement mark the correct statement.
Answer» X : North , Y : South , P : North If the rod PQ is free to MOVE ALONG its axis then rod comes to rest in middle of XY The initial force of attraction between rod and solenoid will increase considerably if cardboard tube is replaced by one MADE from some magnetic material none of these Answer :A::B::C

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In the diagram XY is a long solenoid of insulated wire wound on a cardboard tube. PQ is a soft iron cylinder. The current is flowing in the wounded wire in the direction shown in figure. For this arrangement mark the correct statement.

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