# Electronics - Parallel Circuits - Discussion

Discussion Forum : Parallel Circuits - General Questions (Q.No. 11)

11.

What would these meter readings indicate about the circuit in the given circuit?

Meter Readings: I = 7.6 mA, V = 12 V

Discussion:

17 comments Page 1 of 2.
Anomie said:
4 years ago

I=7.6mA so.

~7.6=12V/(7.5K*2K/9.5K).

So R2 is not considered for the meter current so it can a open R2.

~7.6=12V/(7.5K*2K/9.5K).

So R2 is not considered for the meter current so it can a open R2.

Muhammad Feroz Aftab said:
5 years ago

Perfect Answer, thanks @Saichaitanya.

Saish said:
6 years ago

Yes, you are correct. Agree @Addy.

Maan said:
6 years ago

I agree @Saichaitanya.

Pratiksha said:
6 years ago

Well said, thanks for the given explanation.

Addy said:
7 years ago

Just look at the fig. above, there is showing batteries positive lead is connected to ground. Not a short to another component which is also grounded. If positive supply connect to the ground else is there current flow in the circuit! Please tell me.

Samir said:
7 years ago

Thank you guys for giving a clear explanation.

Pre said:
7 years ago

Well done @ Himanshu Verma.

Santosh said:
9 years ago

Voltmeter is in parallel connection, so reading is 12V.

Now for resistance calculation which is connected parallel with 2k ohm resistance (R3):

Equivalent resis. R = 12V/7.6mA = (30/19)K ohm.

So, Rx ll R3 = (30/19)k.

or, (1/Rx)+ (1+R3) = 1/(30/19)k.

or, (1/Rx)+ (1/2) = (19/30).

or, (1/Rx) = (19/30)-(1/2).

or, 1/Rx = 4/30.

or, Rx = 30/4 = 7.5k ohm.

i.e., shows R1 is connected & R2 is opened.

Now for resistance calculation which is connected parallel with 2k ohm resistance (R3):

Equivalent resis. R = 12V/7.6mA = (30/19)K ohm.

So, Rx ll R3 = (30/19)k.

or, (1/Rx)+ (1+R3) = 1/(30/19)k.

or, (1/Rx)+ (1/2) = (19/30).

or, (1/Rx) = (19/30)-(1/2).

or, 1/Rx = 4/30.

or, Rx = 30/4 = 7.5k ohm.

i.e., shows R1 is connected & R2 is opened.

Gigi said:
1 decade ago

Do the total resistance in the cut by V/I that is 1.578.

Then do the total combination or resist ivory in parallel which resisters combination gives 1.578 ohms and other resistor is open.

Then do the total combination or resist ivory in parallel which resisters combination gives 1.578 ohms and other resistor is open.

Post your comments here:

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers