Q. 10 A3.9( 40 Votes )

In a metre bridge [Fig. 3.27], the balance point is found to be at 39.5 cm from the end A, when the resistor Y is of 12.5Ω.
Determine the resistance of X. Why are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips?

Answer :

The diagram is shown below:



Balance Point from end A, l1 = 39.5 centimeter


Resistance of resistor Y = 12.5 Ω


Balance condition is given by,




X = 8.2 ohm

Thick copper strips are used to minimize the resistance of the connnecting wires

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Ohm's Law - Full Concept in one Go59 mins
Know about Internal Resistance & EMF42 mins
Interactive Quiz on Ohm's law & Drift + Thermal VelocityFREE Class
Interactive Quiz on Current Electricity46 mins
Quick Revision of Current Electricity68 mins
Quiz | Wheatstone BridgeFREE Class
Quiz | Drift Velocity & Thermal VelocityFREE Class
Drift Velocity & Thermal VelocityFREE Class
Kirchoff's Law for VoltageFREE Class
Questions based on Kirchoff's Law for Voltage67 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses