Electronics - Parallel Circuits - Discussion


If R2 opens in the given circuit, the voltage across R1 will ___.

[A]. increase
[B]. decrease
[C]. equal 0 V
[D]. remain unchanged

Answer: Option D


No answer description available for this question.

Babu said: (May 23, 2011)  
The resistors are connected in parallel.

So in the parallel connection voltage remains unchanged.

Kulbs &Amp; Mangs said: (Jun 7, 2012)  
But when we remove the resistance R2, the circuit changes. Now the whole current will flow through R1 only and voltage across R1 will increase according to V=IR relation.

Vijay said: (Jul 28, 2013)  
In parallel voltage across R1 & R2 have same Vs.

But when R2 is removed then total resistance increases so now total current flow through R1 will be also decrease so according to V= IR voltage remains same.

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