A magnetic needle is placed on a cork floating in a still lake in the northern hemisphere. Does the needle togather with the cork move towards the north of the lake

A magnetic needle is placed on a cork floating on a still lake in the northern hemisphere. Does this needle together with the cork move towards the north of the lake?

A magnetic needle is placed on a cork floating on a lake in the northern hemisphere. Does this needle together with the cork move towards the north of the lake?

A magnetic needle placed on a piece of cork is floating on the calm surface of a lake in the northern hemisphere. Would the magnetic needle alongwith the cork move towards north?

A magnetic needle is placed below a very long conducting wire. If current is sent through the wire from east to west, in which direction will the north pole of the needle be deflected?

A wire is kept horizontally at a place in the northern hemisphere of the earth . In what direction will force act on the wire due to the vertical component of the earth's magnetic field , if electric current flows through the wire from south to north ?

A magnetic needle is placed with its north pole facing north in north south direction. In its map of magnetic field the null point will be

The mass of a magnetic needle is 7.5 g and its magnetic moment is 98 units . To keep the magnetic needle horizontal in the northern hemisphere , what should be the position of its fulcrum with respect to its Centre of gravity ? Vertical component of earth's magnetic field = 0.25 Oe .