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प्रश्न
What is used to turn off the sudden increase in current in the electrical circuit of the house nowadays?
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उत्तर
Nowadays, Miniature Circuit Breakers (MCB) is used to turn off the sudden increase in current in the electrical circuit of the house.
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संबंधित प्रश्न
Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.
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Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?
When current is switched ‘on’ in a room heater, it ______.
Write Joule's law of heating.
An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
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An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
(b) How much energy is transferred to the heater each second?
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Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
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A resistance of 25 Ω is connected to a 12 V battery. Calculate the heat energy in joules generated per minute.
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Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. Calculate:
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Write scientific reason.
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Explain the importance/uses of fuse wire.
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True or False – If False give the correct answer
The fuse wire does not melts whenever there is overload in the wiring.
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Name any two appliances which work under the principle of heating effect of current.
Which of the following is correct?
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An electric cell produces electricity from the ______ ______ in it.
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Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in the following figure. The current flowing in both the circuits is the same.
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An electrochemical cell converts ______ energy into ______ energy.
If 220 V potential difference is applied across an electric bulb, a current of 0.45 A flows in the bulb. What must be the power of the bulb?
An electric kettle of 2 kW is used for 2h. Calculate the energy consumed in
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