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Q.

The figure shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Which of them labels are the terminals of the bulb?


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a

1 and 2

b

2 and 3

c

3 and 4

d

5 and 2 

answer is C.

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Detailed Solution

3 and 4 are labels of the terminals of the bulb.
A bulb is a device which emits light when the switch is moved to the ON position. The filament which glows is made up of tungsten metal. In the given figure, the terminal of the bulb is labelled as 3 and 4 in the figure. Glass covering is labelled as 1, the filament is marked as 4, and, 5 is labelled as base wire.
 
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