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प्रश्न
______ is the device used to close or open an electric circuit.
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उत्तर
Positive is the device used to close or open an electric circuit.
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संबंधित प्रश्न
What is a circuit diagram
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.
- 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.
Draw a neat diagram showing a closed electric circuit.
Explain the following:
Closed circuit
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
In an electric circuit a fuse is a ______ ______ to prevent possible fire.
Draw the symbols of the following circuit components.
Switch in off position
Paheli connected two bulbs to a cell as shown in the following figure.
She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
