Find the value of R in figure so that th...

Find the value of R in figure so that there is no current in the 50(Omega) resistor.

Text Solution

Verified by Experts

The correct Answer is:

This is a Wheatstone bridge with the galvanometer replaced by the 50(Omega) resistor. There will be no vurrent in the 50(Omega) resistor if the bridge is balanced.
In this case,
`(10(Omega))/(20(Omega))=R/(40(Omega))`
`R=20(Omega).`

Topper's Solved these Questions

ELECTRIC CURRENT IN CONDUCTORS
HC VERMA|Exercise Worked Out Examples|32 Videos
ELECTRIC CURRENT IN CONDUCTORS
HC VERMA|Exercise worked out Example|1 Videos
DISPERSION AND SPECTRA
HC VERMA|Exercise Exercises|11 Videos
ELECTRIC CURRENT THROUGH GASES
HC VERMA|Exercise Exercises|23 Videos

Similar Questions

Explore conceptually related problems

In the circuit shown, the current in the 1 Omega resistor is ......

In the circuit of adjoining figure the current through 12 Omega resistor will be

Find out the magnitude of resistance X in the circuit shown in figure, When no current flows through the 5 Omega resistance

In the given circuit diagram, calculate: the value of current through each resistor

In the circuit shown here, what is the value of the unknown resistor R so that the total resistance of the circuit between points P and Q is also equal to R

20Omega resistor is connected with the A.C. source of V = 282sin (120 pi t), the current passing through the resistor will be ……..

In the circuit the current is to be measured. What is the value of the current if the ammeter shown (a) is a galvanometer with a resistance R_G = 60.00 Omega , (b) is a galvanometer described in (a) but converted to an ammeter by a shunt resistance r_s= 0.02 Omega , (c ) is an ideal ammeter with zero resistance?

Two cells of same emf E but internal resistance r_(1) and r_(2) are connected in series to an external resistor R (figure). What should be the value of R so that the potential difference across the terminals of the first cell becomes zero ?

Three resistors, an ideal cell are connected as shown in figure. The switch is initially open. When we close the switch, the current in the resistor R_(2) will.

HC VERMA-ELECTRIC CURRENT IN CONDUCTORS-Exercises

Find the value of R in figure so that there is no current in the 50(Om...
Text Solution
|
The amount of charge passed in time t through a cross-section of a wir...
Text Solution
|
An electric gun emits 2.0xx10^(16) electrons per second. What electric...
Text Solution
|
The electric current existing in a discharge tube is 2.0(mu)A.How much...
Text Solution
|
The current through a wire varies with time as I = I(0) + alpha t , ...
Text Solution
|
A current of 1.0 A exists in a copper wire of cross-section 1.0mm^(2)....
Text Solution
|
A wire of length 1 m and radius 0.1mm has a resistance of 100(Omega).F...
Text Solution
|
A uniform wire resistance 100(Omega)is melted and recast in a wire of ...
Text Solution
|
Consider a wire of length 4m and cross-sectional areal 1 mm^(2) carryi...
Text Solution
|
What length of a copper wire of cross-sectional area 0.01 mm^2 will be...
Text Solution
|
Figure shows a conductor of length l carrying current i and having a c...
Text Solution
|
A copper wire of radius 0.1mm and resistance 1k(Omega)is connected acr...
Text Solution
|
Calculate the electric field in a copper wire of cross-sectional area2...
Text Solution
|
A wire has a length of 2.0m and a resistance of 5.0(Omega).Find the el...
Text Solution
|
The resistances of an iron wire and a copper wire at 20^(@)Care 3.9(Om...
Text Solution
|
The current in a conductor and the potential difference across its end...
Text Solution
|
Shown an arrangement to measure the emf (epsilon)and internal resistan...
Text Solution
|
The potential dofference between the terminals of a battery of emf6.0V...
Text Solution
|
The potential difference between the terminals of a 6.0V battery is 7....
Text Solution
|
The internal resistance of an accumulator battery of emf 6V is 10(Omeg...
Text Solution
|
Find the value of i(1)//i(2)in figure if (a)R=0.1(Omega) (b)R=1(Ome...
Text Solution
|