Advertisements
Advertisements
प्रश्न
Sketch four magnetic field lines as obtained in a limited space on a horizontal plane in the earth's magnetic field alone.
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
Draw a diagram to show the magnetic field lines around a bar magnet.
The shape of the earth's magnetic field resembles that of an imaginary:
(a) U-shaped magnet
(b) Straight conductor carrying current
(c) Current-carrying circular coil
(d) Bar magnet
A thick wire is hanging form a wooden table. An anticlockwise magnetic field is to be produced around the wire by passing current through this wire by using a battery. Which terminal of the battery should be connected to the:
(a) top end of wire?
(b) bottom end of wire?
Give reason for your choice.
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
Explain what you understand by magnetic induction. What role does it play in attraction of a piece of iron by a magnet?
Explain the following :
Several soft iron pins can cling, one below the other, from the pole of a magnet.
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
What is the magnitude of the magnetic field at each neutral point? Give a reason for your answer.
What conclusion is drawn regarding the magnetic field at a point if a compass needle at that point rests in any direction? Give reason for your answer.
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
