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प्रश्न
How does the short circuit form?
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उत्तर
A short circuit occurs when the live and neutral wires come into contact due to damaged insulation or a fault in an appliance. This causes a large current to flow.
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संबंधित प्रश्न
The following figure shows the symbols for components used in the accompanying electrical circuit. Place them at proper places and complete the circuit.
Which law can you prove with the help of above circuit?
The accompanying figure shows some electrical appliances connected in a circuit in a house. Answer the following questions.
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- 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?
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Answer the following question.
With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances.
What do you understand by the open electric circuit?
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Explain the following:
Open circuit
Find the odd one out and give its explanation.
Flow of electricity through a closed circuit is _____.
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.
Tabulate the different components of an electric circuit and their respective symbols.
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?
Higher Order Question
A student made a circuit by using an electric cell, a switch, a torch bulb (fitted in the bulb holder), and copper connecting wires. When he turned on the switch, the torch bulb did not glow at all. The student checked the circuit and found that all the wire connections were tight.
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Draw the circuit diagram for the following series connection
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
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Fuse is
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Explain about domestic electric circuits. (circuit diagram not required)
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Reason: Generally, the metal disc of a cell acts as a positive terminal.
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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?
In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?
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In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?
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Name the device which is used to measure the strength of the electric current in an electric circuit.
Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
