What is Electric bulb and Electric Fuse?
Answers
Answer:
Hey,
Electric Bulb:
It is a device which produces light when electricity is passed through its terminals.
Electric Fuse:
It is a safety device which is used to limit the current in an electric circuit.
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It has a filament made of tungsten. So, most of the power consumed by this, is dissipated in the form of heat and some part is converted into light because it has high resistivity and high melting point.
The filament is thermally isolated and the bulb is filled with chemically inactive nitrogen and argon gas to prolong the life of filament.
It is used as a safety device in household circuits. It protects the circuits, by stopping the flow of any unduly high electric current. It is connected in series with the mains supply. It consists of an alloy of lead and tin which has appropriate melting point.
When the current flowing through the circuit exceeds the safe limit, the temperature of the fuse wire increases, the fuse wire melts and breaks the circuit. This helps to protect the other circuit elements from hazards caused by heavy currents.
Fuse are always rated for different current values such as 1 A, 2 A, 5 A, 10 A, 15 A, etc.