Electronics - Series-Parallel Circuits - Discussion


If R1 is in series with a parallel combination of R2, R3, and R4, when the resistance value of R2 increases, the voltage across R3 will

[A]. increase
[B]. decrease
[C]. remain the same
[D]. Cannot tell

Answer: Option A


No answer description available for this question.

Awab said: (May 2, 2012)  
Explain please.

Towqeer Usmani said: (Jun 12, 2012)  
When the resistance in parallel connection across R2 is increased, the amount of current in this shunt circuit will shift toward the other resistors placed in parallel legs, therefore the value of current will be increased in the remaining resistors i.e. R3 & R4.

Rashee said: (Dec 9, 2013)  
But the voltage should remain same in parallel circuit.

Prashant said: (Sep 5, 2015)  
Voltage should be same means that the voltage is same across r2 r3 and r4 but this constant value may increase or decrease by varying the value of resistance i.e. v=IR.

Kamran said: (Oct 27, 2016)  
R2, R3, and R4 are in parallel when we will increase R2 total resistance of parallel will decrease So voltage increase.

Imran said: (Dec 5, 2016)  
You are right @Kamran.

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