In the given diagram, there are two switches $S_{1}$ and $S_{2}$ and two bulbs X and Y. If switch $S_{1}$ is closed and switch $S_{2}$ is open then

Only bulb X will glow

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Only bulb Y will glow.

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Both bulbs X and Y will glow.

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Neither bulb X nor bulb Y will glow.

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Solution

The correct option is B Only bulb Y will glow.
Since switch $S_{2}$ is open and $S_{1}$ is closed, the current will pass through Y but for bulb X, the circuit is incomplete. There is no complete path for current to flow for bulb X. Hence, only bulb Y will glow.

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Similar questions

Two bulbs A and B are connected through switches $S_{1}$ and $S_{2}$ as shown. Which of the following statement is true:

S_{1}

S_{2}

\begin{matrix} List~I & List~II I) B_{1} & P) \frac{256}{9} II) B_{2} & Q) \frac{128}{9} III) B_{3} & R) \frac{200}{9} IV) B_{4} & S) \frac{512}{9} T) \frac{800}{9} U) \frac{400}{9} \end{matrix}

S_{1}

S_{2}

\begin{matrix} List~I & List~II I) B_{1} & P) \frac{256}{9} II) B_{2} & Q) \frac{128}{9} III) B_{3} & R) \frac{200}{9} IV) B_{4} & S) \frac{512}{9} T) \frac{800}{9} U) \frac{400}{9} \end{matrix}

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