In Wheatstone's bridge P=9ohm, Q=11ohm, R=4ohm and S=6ohm. How much resistance m

Question

In Wheatstone's bridge P=9ohm, Q=11ohm, R=4ohm and S=6ohm. How much resistance must be put in parallel to the resistance S to balance the bridge

Options:

A . 24 ohm

B . 449 ohm

C . 26.4 ohm

D . 18.7 ohm

Answer: Option C
:
C

\frac{P}{Q} = \frac{R}{S^{'}}

(For balancing bridge)

\Rightarrow S^{'} = \frac{4 \times 11}{9} = \frac{44}{9}

\Rightarrow \frac{1}{S^{'}} = \frac{1}{r} + \frac{1}{6}

\Rightarrow \frac{9}{44} - \frac{1}{6} = \frac{1}{r}

\Rightarrow r = \frac{132}{5} = 26.4 Ω

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. What will be the equivalent resistance of circuit shown in figure between points A and D ....

Question 2. In the circuit shown here E1=E2=E3=2V and R1=R2=4Ω. The current flowing between point A and B through battery E2 is....

Question 3. A torch bulb rated as 4.5 W, 1.5 V is connected as shown in the figure. The emf of the cell needed to make the bulb glow....to make the bulb glow at full intensity is

Question 4. The figure shows a circuit diagram of a ‘Wheatstone Bridge’ to measure the resistance G of the galvanometer. The rel....the galvanometer. The relation PQ=RG will be satisfied only when

Question 5. In the circuit shown below E1 = 4.0 V,R1=2Ω ,E2= 6.0 V, R2=4Ω and R3 = 2Ω. The current I1is....

Question 6. The magnitude and direction of the current in the circuit shown will be....

Question 7. The balancing length for a cell is 560 cm in a potentiometer experiment. When an external resistance of 10 ohm is connec....cm. The internal resistance of the cell in ohms is

Question 8. In the network shown in the figure each of resistance is equal to 2Ω. The resistance between A and B is....

Question 9. For comparing the e.m.f.'s of two cells with a potentiometer, a standard cell is used to develop a potential gradie....Which of the following possibilities would make the experiment unsuccessful.

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0