* 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 test will you perform
order to find out the reason for the bulb not glowing?
Answers
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, which test will you perform?
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This would be a troubleshooting flow in order from the easiest and most obvious check to ones requiring test gear.
Visually check to make sure the batteries are connected properly; in series and not opposition. Series would be -+-+ so the voltage is additive. With a ++ or - - connection, resultant voltage will be zero.
Using a voltmeter, check voltage at bulb connection or socket. This will determine if power is available to the bulb.
If steps 1 & 2 are good, remove the bulb and check for resistance using an ohmmeter. Open or extremely high resistance indicates either an open bulb or a failure.
Here is your answer
Answer:
The following test should be performed to find the reason why 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 negative terminal of other battery. If the batteries are connected in this 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 nor 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.