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प्रश्न
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
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उत्तर
Rating of appliance 5 kW 200 V
∴ I = `5000/200`
= 25 A very high current
So A fuse rated 8A cannot be used.
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संबंधित प्रश्न
Explain the meaning of the student 'current rating of a fuse is 5A'.
State the characteristics required in a material to be used as an effective fuse wire.
For a fuse, higher the current rating ________ is the fuse wire.
Name the factors on which the heat produced in a wire depends when current is passed in it, and state how does it depend on the factors stated by you.
A fuse wire is made of an alloy of ______ and ______. If the current in a circuit exceeds the current rating of the fuse wire, it ______.
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker?
Why fuse wire must always be connected in ‘live’ wire? Explain.
What is an ‘electric fuse’? State its two characteristics of electric fuse.
Identify the option that displays the correct wiring with correct colour code:
