Two tangent galvanometers A and B have c...

Two tangent galvanometers A and B have coils of radii `8cm` and `16cm` respectively and resistance `8ohm` each. They are connected in parallel to a cell of emf `4V` and negligible internal resistance. The deflections produced are `30^@` and `60^@` respectivley. A has 2 turns. What is the number of turns in B?

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

NTA JEE MOCK TEST 83
NTA MOCK TESTS|Exercise PHYSICS|25 Videos
NTA JEE MOCK TEST 85
NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

Two cells of emfs 1.5 V and 2.0v having internal resistance 0.2 Sigma and 0.3 Sigma respectively are connected in parallel . Calculate the emf and internal resistance of the equivalent cell .

A potentiometer wire has a length of 4 and a resistance of 8 ohm. It is connected in series with a cell of e.m.f. 2 V and internal resistance 2 ohm. The potential drop per unit length of the wire is

Two tangent galvanometer have redii 7.5 cm and 10 cm , number of turns are 15 and 10 and resistances are 8 Omega and 12 Omega . They are joined in parallel in circuit. If deflection in one is 60^(@) the deflection in second galvanometer is :

Four cell each of emf 2 V and internal resistance 1 ohm are connected n parallel with an external resistance of 6 ohm. The current in the external resistance is

Two resistance connected in parallel across a cell of negligible internal resistance, use 4.5 times the power that they would use, when in series across the same cell. If one of the resistance is 8ohm, the other is:-

Two tangent galvanometers having coils of the same radius are connected in series. A current flowing in them produces deflections of 60^(@) and 45^(@) respectively. The ratio of the number of turns in the coils is

NTA MOCK TESTS-NTA JEE MOCK TEST 84-PHYSICS

A 2 m long wire of resistance 4 Omega and diameter 0.64 mm is coated w...
Text Solution
|
An elastic ball is dropped on a long inclined plane. If bounces, hits ...
Text Solution
|
A hanging block of mass m' prevents the smaller block of mass m from s...
Text Solution
|
There is a stream of neutrons with a kinetic energy of 0.0327 eV. If t...
Text Solution
|
The spring block system lies on a smooth horizontal surface. The free ...
Text Solution
|
The potential energy of a partical varies as . U(x) = E0 for 0 le x...
Text Solution
|
A glass capillary tube is of the shape of a truncated cone with an ape...
Text Solution
|
A ray of light is incident on a surface of glass slab at an angle 45^@...
Text Solution
|
A uniform rod of mass M is hinged at its upper end. A particle of mass...
Text Solution
|
The circuit has two oppositely connected ideal diodes in parallel. Wha...
Text Solution
|
An ideal gas is expanded such that PT^(2)=a constant. The coefficient ...
Text Solution
|
If velocity, force and time are taken to be fundamental quantities fin...
Text Solution
|
In a biprism experiment with sodium light,bands of width 0.0195cm are ...
Text Solution
|
A source of sound S emitting waves of frequency 100 Hz and an observer...
Text Solution
|
A 0.5kg block slides from the point A on a horizontal track with an in...
Text Solution
|
Kalpha wavelength emitted by an atom of atomic number Z=11 is lambda. ...
Text Solution
|
A galvanometer of resistance 30Omega is connected to a battery of emf ...
Text Solution
|
Two tangent galvanometers A and B have coils of radii 8cm and 16cm res...
Text Solution
|
During an adiabatic process, the pressure of a gas is found to be prop...
Text Solution
|
The resultant force (inmuN) on the current loop PQRS due to a long cur...
Text Solution
|