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प्रश्न
Name the device used these days in place of electric fuses in electrical circuits.
उत्तर
A miniature circuit breaker (MCB) is used these days in place of electric fuses in electrical circuits.
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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.
The accompanying figure shows some electrical appliances connected in a circuit in a house. Answer the following questions.
- By which method are the appliances connected?
- What must be the potential difference across individual appliances?
- 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 any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?
The switch is used to close or open an electric circuit.
In the given circuit diagram, which of the given switch(s) should be closed. So that only bulb A glows.
Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
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| (i) | (ii) | (iii) |
In an electric circuit a fuse is a _________ _______ to prevent possible fire.
Observe the circuit given:
1. Would any of the bulbs glow when the switch is in the ‘OFF’ position?
2. What will be the order in which the bulbs A, B, and C will glow when the switch is moved to the ‘ON’ position?
