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प्रश्न
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उत्तर
The metal case of an electrical appliance is earthed so that in any case of accidental contact of live wire with the metallic body of the appliance, the earthing would provide a safe and easy path for the electric charges to flow down to the earth which acts as very large sink. Thus, user is thereby protected from any fatal electric shock.
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संबंधित प्रश्न
What is an electric current?
Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5 V, 5 Ω, 10 Ω and 15 Ω resistors and a plug key, all connected in series.
A fuse is a short piece of wire of high ______ and low ______.
What would be the danger involved in replacing a blown fuse with the one which would carry a large current?
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(a) What do the symbols Q and V represent?
(b) Express the power P in terms of current and resistance explaining the meanings of symbols used there in.
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The total current taken from the supply
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