Engineering Circuit Analysis: Problem 4 - Obtain Current Through Galvanometer

Click For Summary
The discussion revolves around calculating the current through a Galvanometer in a Wheatstone bridge circuit, with a focus on a resistance of 14Ω. The user applied a delta-Y transformation and calculated an equivalent resistance of 32.4675Ω, leading to a current of 0.4927 A. However, another participant questions the validity of this approach, suggesting that the transformation may eliminate the resistor through which the current is being measured. This indicates a potential misunderstanding of the circuit analysis method used. The accuracy of the current calculation remains in doubt due to the concerns raised about the transformation applied.
cooper607
Messages
49
Reaction score
0

Homework Statement



problem---4
(5 marks) Obtain the current through the Galvanometer G, having a resistance of 14Ω, in
the Wheatstone bridge shown in Fig-4

Homework Equations



i know the delta-Y transformation and applied it, i found out the R (eq) to be 32.4675ohm

The Attempt at a Solution


I=V/R= 0.4927 A
someone please check the answer of problem no 4 and let me know if its right or wrong
regards
 

Attachments

Physics news on Phys.org
cooper607 said:

Homework Statement



problem---4
(5 marks) Obtain the current through the Galvanometer G, having a resistance of 14Ω, in
the Wheatstone bridge shown in Fig-4

Homework Equations



i know the delta-Y transformation and applied it, i found out the R (eq) to be 32.4675ohm



The Attempt at a Solution


I=V/R= 0.4927 A
someone please check the answer of problem no 4 and let me know if its right or wrong
regards

Doesn't look right to me.

If you apply a Δ-Y transformation, won't you transform-away the very resistor you wish to find the current through?
 

Similar threads

Engineering Why Is Nodal Analysis Confusing in This Circuit Example?
  • · Replies 7 ·
Replies
7
Views
2K
Engineering Why is the voltage source high potential into node 1 at -12 V in this op amp problem?
  • · Replies 15 ·
Replies
15
Views
2K
Engineering A circuit with non-linear devices
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Current density calculation in anisotropic ferromagnetic film
  • · Replies 7 ·
Replies
7
Views
2K
Engineering Finding Internal Resistance through Circuit Analysis
  • · Replies 9 ·
Replies
9
Views
2K
Help with Node Analysis Circuit Problem
  • · Replies 25 ·
Replies
25
Views
3K
Current through an inductor as a function of time
  • · Replies 10 ·
Replies
10
Views
887
Engineering Circuit Analysis with Laplace Transforms
  • · Replies 3 ·
Replies
3
Views
3K
Engineering How to Calculate Thevenin Equivalent Circuit
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Unknown resistor in a series-parallel circuit
  • · Replies 17 ·
Replies
17
Views
12K