It is required to pass only one-tenth of...

It is required to pass only one-tenth of the main current through a galvanometer having a resistanec of `27Omega`. Calculate the length of the wire of specific resistance `48xx10^(-6)Omegacm` and area of cross-section `0.2mm^(2)` required to make a shunt for this purpose.

Text Solution

Verified by Experts

The correct Answer is:

1.25m

Topper's Solved these Questions

ELECTRICAL INSTRUMENTS
SL ARORA|Exercise Problem From competitive examinations|11 Videos
ELECTRIC POTENTIAL AND ELECTRIC FLUX
SL ARORA|Exercise Problems for self practive|61 Videos
ELECTROMAGNETIC INDUCTION
SL ARORA|Exercise All Questions|108 Videos

Similar Questions

Explore conceptually related problems

The resistance of the shunt required to allow 2% of the main current through the galvanometer of resistance 49Omega is

To send 10% of the main current through a moving coil galvanometer of resistance 9Omega , shunt S required is

If only 2% of the main current is to be passed through a galvanometer of resistance G , then the resistance of the shunt will be

If only 2% of the main current is to be passed through a galvanometer of resistance G , then the resistance of shunt will be

What length of the wire of specific resistance 48 xx 10^(-8) Omegam is needed to make a resistance of 4.2 Omega (diameter of wire = 0.4 mm )

If 2% of the main current is to be passed through the galvanometer of resistance G , the resistance of shunt required is

The shunt required for 10% of main current to be sent through the moving coil galvanometer of resistance 99 Omega will be-

What length of a wire of diameter 0.46 mm and specific resistance 50xx10^(-6) Omega m would be required to make a coil of resistance 10 Omega ?

If the current in the primary circuit of a potentiometer wire of specific resistance is 40 xx 10^(-8)Omega -m and area of cross-section 8 xx 10^(-6)m^(2) is 0.5 amp. Then potential gradient of wire is –

SL ARORA-ELECTRICAL INSTRUMENTS-Problem for self practice

A galvanometer has current sensitivity of 5 divisions/mA and a voltage...
Text Solution
|
A 250muA meter has 50 divisions and it needs 250 mV for full scale def...
Text Solution
|
It is required to pass only one-tenth of the main current through a ga...
Text Solution
|
With a potentiometer, null points were obtained at 140 cm and 180 cm w...
Text Solution
|
In a method for comparing emfs by a potentiometer a balance point is f...
Text Solution
|
In a potentiometer with a cell of unknown emf the balance point was ob...
Text Solution
|
A potentiometer having a wire 10 m long stretched on it, is connected ...
Text Solution
|
With a certain cell, the balance point is obtained at 60 cm from the z...
Text Solution
|
With a cell of emf 1.5 V, the balance point is obtained at a distance ...
Text Solution
|
A 10 metre long potentiometer wire carries a steady current. A 1.018 v...
Text Solution
|
A potentiometer wire has a potential gradient of 0.0025 volt/cm along ...
Text Solution
|
AB is a potentiometer wire of length 100 cm. when a cell epsi(2) is co...
Text Solution
|
A potentiometer is being used to determine the internal resistance of ...
Text Solution
|
A cell can be balanced against 110 cm and 100 cm of potentiometer wire...
Text Solution
|
A potentiometer wire of length 100 cm has a resistance of 10Omega. It ...
Text Solution
|
The resistance of a potentiometer wire is 18Omega. A high resistance b...
Text Solution
|
A standard cell of emf 1.08 V is balanced by the potential difference ...
Text Solution
|
In an experiment with a potentiometer to measure the internal resistan...
Text Solution
|
Four resistances of 15Omega,12Omega,4Omega and 10Omega respectively ar...
Text Solution
|
Four coils resistances 3,6,9 and 30Omega respectively are arranged to ...
Text Solution
|