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प्रश्न
Why do we cover plug pin holes which are within the reach of children with cellotape or a plastic cover when not in use?
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उत्तर
The child may put his/her fingers into the socket and he/she may get an electric shock which could be fatal. Plastic/cellotape is a bad conductor of electricity and hence chances of electric shock get reduced.
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संबंधित प्रश्न
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.
The direction of current flowing in the coil of an electromagnet at its two ends X and Y are as shown below:
What is the polarity of end X?
What is the polarity of end Y?
Name and state the rule which you have used to determine the polarities.
How should the electric lamps in a building be connected so that the switching on or off in a room has no effect on other lamps in the same building?
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
Magnetic effect of current was discovered by ______.
Unscramble the following words:
HTRCO
What are MCBs? How do they work?
Sailors use ______ to find direction in order to navigate on the sea.
As shown in the diagram an aluminium rod 'AB' is suspended horizontally between the two poles of a strong horse shoe magnet in such a way that the axis of rod is horizontal and the direction of the magnetic field is vertically upward. The rod is connected in series with a battery and a key.
State giving reason:
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- What change is observed in a situation in which the axis of the rod 'AB' is moved and aligned parallel to the magnetic field and current is passed in the rod in the same direction?
A rectangular loop ABCD carrying a current I is situated near a straight conductor XY, such that the conductor is parallel to the side AB of the loop and is in the plane of the loop. If a steady current I is established in the conductor as shown, the conductor XY will ______.
