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प्रश्न
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?
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उत्तर
The following test should be performed to find the reason why the bulb is not glowing:
- Check how the terminals of the batteries are connected to each other: Ensure that the positive terminal of one battery is connected to the negative terminal of the other battery. If the batteries are connected in this way and even then the bulb does not glow, go for the next test given below.
- Check for the broken wires in the circuit: Ensure that the wires used for connecting the various electrical components are not broken in between, i.e., ensure that the circuit is closed. Even after ensuring that the wires are not broken in between, the bulb does not glow; move to the next test.
- Check how the connecting wires are connected to the bulb: Ensure that the bulb is connected to the batteries using the connecting wires as shown below. Even now, if the bulb does not glow, replace the bulb or the batteries with a new one.
संबंधित प्रश्न
Redraw the circuit of question 1, putting in an ammeter to measure the current through the resistors and a voltmeter to measure the potential difference across the 12 Ω resistors. What would be the readings in the ammeter and the voltmeter?
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.
- What could be the possible reason for the torch bulb not glowing even when the circuit appears to be complete?
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Reason: Lightning carries very high voltage.
