Advertisements
Advertisements
प्रश्न
An electromagnet does not attract a piece of iron.
विकल्प
True
False
Advertisements
उत्तर
This statement is False.
Explanation:
- The working of an electromagnet is based on the magnetic effect of electric current.
- When current passes through it, an electromagnet behaves as a magnet, attracting a piece of iron.
APPEARS IN
संबंधित प्रश्न
Do you think an electromagnet can be used for separating plastic bags from a garbage heap? Explain.
Describe some experiment to show that the magnetic field is associated with an electric current.
Which way does the wire in the diagram below tend to move?
A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:
the N-pole is removed?
A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:
the S-pole is inserted?
In the Activity shown below, how do we think the displacement of rod AB will be affected if
- current in rod AB is increased
- a stronger horse-shoe magnet is used
- length of the rod AB is increased?
|
Explain the magnetic field created around a straight current carrying conductor with the help of a diagram.
In the arrangement shown in Figure there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then
Sailors use ______ to find direction in order to navigate on the sea.
