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प्रश्न
The safety device based on the heating effect of electric current is called a ______.
उत्तर
The safety device based on the heating effect of electric current is called a fuse.
Explanation:
Fuse is a safety device, which limits current in the circuit and breaks the circuit if the current exceeds its maximum limit.
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संबंधित प्रश्न
An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
(a) How much charge flows around the circuit each second?
Which electric heating device in your home do you think have resistors which control the flow of electricity?
Give Scientific reason.
In practice, the unit kWh is used for the measurement of electrical energy, rather than joule.
Rewrite the following statement by selecting the correct option:
1 A = ____________ mA.
Write two devices based on the heating effect of electric current.
The heating element of an electric iron is made up of:
(a) Observe the diagram given below and state whether the bulb will glow or not when we switch on K.
(b) Is it safe to handle the bulb when the switch is OFF?
(c) Give a reason for your answer in (b).
Explain the working of an electric fuse.
Fuse is a strip of alloy wire which is made up of lead and tin with a very low ______.
An electric iron of resistance 20 Ω draws a current of 5 A. The heat developed in the iron in 30 seconds is ______.
