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प्रश्न
Unscramble the following words:
HTRCO
उत्तर
TORCH
APPEARS IN
संबंधित प्रश्न
Will the compass needle show deflection when the switch in the circuit shown by figure is closed?
An electromagnet does not attract a piece of iron.
Fill in the following blank with suitable words:
If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a ........... pole.
Describe some experiment to show that the magnetic field is associated with an electric current.
What is Maxwell's corkscrew rule? For what purpose is if used?
For the coil in the diagram below, when the switch is pressed:
(a) what is the polarity of end A?
(b) which way will the compass point then?
Draw a neat labelled diagram to show the magnetic effect of electric current.
______ are also used to remove splinters of steel or iron in hospitals dealing with eye injuries.
What do you mean by the magnetic effect?
Make four electromagnets with 20, 40, 60 and 80 turns. Connect them one by one to a battery of 2 cells. Bring the electromagnet near a box of pins. Count the number of pins attracted by it. Compare the strengths of the electromagnets.
