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Standard VII

Physics

Parallel Circuit

In the given ...

Question

In the given circuit after switch is closed

Both

I

and

I_{1}

increases

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I

increases but

I_{1}

remain same

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I

decreases but

I_{1}

remain same

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I

increases but

I_{1}

decreases

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Solution

The correct option is D $I$ increases but $I_{1}$ decreases
The two resistances are in parallel so the effective resistance will decrease and thus the total current $I$ will increase. The current now divides into two resistances, so the current passing through $R_{1}$ will decrease.

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In the given circuit after switch is closed

The correct option is D I increases but I1 decreasesThe two resistances are in parallel so the effective resistance will decrease and thus the total current I will increase. The current now divides into two resistances, so the current passing through R1 will decrease.

The correct option is D $I$ increases but $I_{1}$ decreases
The two resistances are in parallel so the effective resistance will decrease and thus the total current $I$ will increase. The current now divides into two resistances, so the current passing through $R_{1}$ will decrease.