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Fuses

In the given ...

Question

In the given figure, a fuse in one of the bulbs causes all the others to go out. Which bulb has fused ?

A

1

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B

4

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C

3

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D

2

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Solution

The correct option is A 1
Fuse in one of the bulbs causes all the others to go out,this means that bulb is in series with the voltage source without any component parallel to it.

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Q. If, out of two light bulbs in a room, one bulb suddenly fuses, the other bulb will:

Q. When the switch was closed in the circuit shown here, the bulbs did not light up.
May be one of the bulbs is fused. How can it be determined which bulb is fused?
figure

(a) Close the switch and notice which bulb does not light up.
(b) Close the switch after removing one bulb at a time until the others light up.
(c) Close the switch and replace the three bulbs with a new one.
(d) There is no way to find out.

A

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is fused, the other two bulbs also cease to glow. But in set

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, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs

When three bulbs are connected in parallel, then what will happen to the glow of other two bulbs if the one bulb get fused ?

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