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प्रश्न
Nowadays MCBs are used in homes, for stop the current in the circuit which suddenly increases.
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उत्तर
- Electrical appliances used in homes like geyser, heater, motor, oven, washing machine, etc. have high power consumption.
- If such appliances are connected simultaneously, a large amount of current flows in the circuit.
- This current may exceed permissible value and cause overloading.
Hence, nowadays MCBs are used in homes, to stop the current in the circuit which suddenly increases due to overloading.
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संबंधित प्रश्न
Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.
What do the following symbols mean in circuit diagrams?
Draw circuit symbols for
a battery of three cells
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
Observe the following figure which bulb get fuse?
The accompanying figure shows some electrical appliances connected in a circuit in a house. Answer the following questions.
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- Will the current passing through each appliance be the same? Justify your answer.
- Why are the domestic appliances connected in this way?
- If the T.V. stops working, will the other appliances also stop working? Explain your answer.
In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing?
Draw a neat diagram showing a open electric circuit.
Explain the following:
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______ is the device used to close or open an electric circuit.
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Higher Order Question
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In which of the electric circuits would the bulb not light up.
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Fuse is
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| 2. | Conductor | b. | Electric circuit |
| 3. | Closed path | c. | Copper |
| 4. | Electric charge | d. | Rubber |
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Reason: Lightning carries very high voltage.
