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प्रश्न
What is the purpose of a fuse in an electrical circuit?
Describe the use of a fuse in an electric circuit.
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उत्तर १
An electric fuse is a device which is used to Ii m it the current in an electric circuit. The use of a fuse thus safeguards the circuit and appliances connected in that circuit from being damaged. It is a short piece of wire made of an alloy of lead and tin. If the current passing through the fuse exceeds the safeguard Ii m it the heat produced melts the fuse and this breaks the circuit.
उत्तर २
Fuse is a safety device which is used to limit the current in an electric circuit.
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Complete the following table. The first answer has been given as an example
| Quantity | Unit |
|
(a) Electrical potential Volt ( b) Resistance ( c) Power ( d) Energy ( e) Resistivity |
Volt ........ .......... ............ .............. |
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Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
