Home Physics Current Electricity Mix A thin uniform wire AB of length 1m, an unkn…
Physics Current Electricity Mix MCQ (Single Correct)

A thin uniform wire AB of length 1m, an unknown resistance X and a resistance of 12 Ω are connected by thick conducting strips, as shown in the figure. A battery and a galvanometer (with a sliding jockey connected to it) are also available. Connections are to be made to measure the unknown resistance X using the principle of Wheatstone bridge. Answer the following questions.

A
Are there positive and negative terminals on the galvanometer?
B
Copy the figure in your answer book and show the battery and the galvanometer (with jockey) connected at appropriate points.
C
After appropriate connections are made, it is found that no deflection takes place in the galvanometer when the sliding jockey touches the wire at a distance of 60 cm from A. Obtain the value of the resistance X.

Share this question

WhatsApp

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
CHECK THE SOLUTION.

Ans. There are no positive and negative terminals on the galvanometer because only zero deflection is needed.


If no deflection is taking place. Then, the Wheatstone's bridge is said to be balanced.

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

In an electrical cable there is a single wire of radius 9 mm of copper. Its resistance is 5 Ω Ω . T…
Two uniform wires A and B are of the same metal and have equal masses. The radius of wire A is twic…
Twelve wires of equal length and same cross-section are connected in the form of a cube. If the res…
The resistance of a wire is per meter. It is bend in the form of a circle of diameter 2m. A wire o…
When the key K is pressed at time t = 0, which of the following statements about the current I in t…
A torch bulb rated as 4.5 W, 1.5 V is connected as shown in the figure. The e.m.f. of the cell need…
CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.