Electronics - Parallel Circuits - Discussion

Discussion Forum : Parallel Circuits - General Questions (Q.No. 10)
Which component is shorted?

Answer: Option
No answer description is available. Let's discuss.
47 comments Page 1 of 5.

Syed Shakeeb said:   1 year ago
In a short circuit, maximax current flow takes place.

Similarly, here R4 is shorted so maximum current is flowing through it.

And the current find a low resistance part to flow.

Habib said:   2 years ago
When R4 will short circuited then total circuit will be series circuit and current will be the same in the whole circuit. R1 R2, R3 will not conduct current.

Faizan said:   5 years ago
You explained well, Thanks @Pankaj.

Ravi said:   5 years ago
You explained well, thanks @Pankaj.

Vishu gupta said:   7 years ago

You solved the question simply with the IQ. Thanks brother.

Paullace said:   7 years ago
I think that is no so complex, in this case, it doesn't matter if the G is conductance or galvanometer.

If the short circuit wasn't in R4 , is so simple as the ammeter that is connected between R3 and R4 should display 0.0000A instead of 2.4A. So R4 should be shorted.

Sushama Saroj said:   7 years ago
Those of you who have optioned for R4, as the answer.

Here is my doubt for them as to why R4 was thought as shorted, and why not you guys said that any of the R1, R2 or R3 was shorted and the rest were open circuit.

Meaning, you guys could have said that R2 (or R1 or R3) was shorted, and the rest i, e R1, R3, and R4 were open.

Shivanand said:   7 years ago
Very simple just observe that all galvanometers are reading the same current there id is no current which is flowing through the r1 r2 r3 and at last to form the loop so that current can flow r4 must be short circuited.

Mamta Bisht said:   7 years ago
Short circuit means lower the resistance. So R1 has the lower resistance so R1 should be the answer.

Mamta said:   7 years ago
As per @Bhadmanathan:

As we all know, voltage is constant in parallel circuit. So I = V/R.

Current through R1 = 12 mA.

Similarly through R2, R3 and R4 is 6 mA, 4 mA and 3 mA.

Open circuit = No current or less current flows.

Short circuit = Large current flows.

But Large current flow is through. So how can R4 short circuit?

As per this rule R1 should be short circuited as low resistance is R1.

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