1. PHYSICS HOLIDAY ASSIGNMENT
Made By : Shivam Saxena
Class: 10th ‘ B ’

2. Magnetic Fields and field Lines
 When a bar magnet is suspended freely from
its centre by a thread, one end of the magnet
points towards the north of the earth and the
other end of the magnet points towards the
south of the earth.The end of the magnet
pointing toward north of the earth is called
north poles of the magnet.

3. Magnetic fields

4. Magnetic Define
 The space or region around a magnet (or a
current carrying wire) within with its influence
can be felt (or magnetic force is experienced)
by another magnet is called magnetic field.
 To locate the magnetic or a bar magnet , we
use iron fillings, or a magnetic compass.

5. The amount of current flow
through a solenoid
 A solenoid is a coil of many turns of an
insulated copper wire closely wound in the
shape of a tight spring.When an electric
current flows through a solenoid , a magnetic
field is set up around the solenoid which is
similar to the magnetic field of bar magnet.

6. Solenoid magnetic field

7. Magnetic field due to loop wire
 The amount of current flowing through the
wire: If the amount of the current flowing
through the circular wire is increased, then
the deflection of the needle of the magnetic
compass placed inside the wire also
increased. On the other hand , if the amount
of current flowing through the wire is
decreased, then the deflection of the niddle
of magnetic compass. B=I

8. Current on loop wire
 The radius of the circular wire :Take two
circular wire of same radii through which the
same amount of current is flowing. It is found
that the deflection of the needle of the
magnetic compass placed at the centre of the
circular wire of smaller radius is more than
that when placed at the centre of the circular
wire of the large radius. B=1/r

9. Pictureofmagneticfieldcarryingloopwire