A moving coil galvanometer has N numbr o...

A moving coil galvanometer has `N` numbr of turns in a coil of effective area `A`, it carries a current `I`. The magnetic field `B` is radial. The torque acting on the coil is

`NA^(2)B^(2)I`

`NABI^(2)`

`N^(2)ABI`

`NABI`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

KINETIC THEORY OF GASES
ERRORLESS |Exercise QUESTIONS|126 Videos
MAGNETISM
ERRORLESS |Exercise Assertion & Reason|1 Videos

Similar Questions

Explore conceptually related problems

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B=0.2 Wb//m^(2) . The torque acting on the coil is

A circular coil of n turns and radius r carries a current I. The magnetic field at the center is

A moving coil galvanometer has number of turns 'N' in its coil. Then its sensitivity is in proportional to :-

In moving coil galvanometer, the magnetic field used is

A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is

A moving coil galvanometer coil has a coil of area A, number of turns N. The radial magnetic field present is B. the moment of inertia of the coil is I about its rotation axis. The torque is applied by the magnetic field on the coil of the galvanometer when current I_(0) passes through it and produces a deflection of pi//2 of the pointer. Then answer the following questions based on the paragraph. If the charge Q is passed almost instantaneosly through the coil, the angular velocity of the coil, immediately after this is

A moving coil galvanometer coil has a coil of area A, number of turns N. The radial magnetic field present is B. the moment of inertia of the coil is I about its rotation axis. The torque is applied by the magnetic field on the coil of the galvanometer when current I_(0) passes through it and produces a deflection of pi//2 of the pointer. Then answer the following questions based on the paragraph. Then the value of torsionl constant of the spring is

ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise

In a moving coil galvanometer, the deflection of the coil q is related...
Text Solution
|
The unit of electric current "ampere" is the current which when flowin...
Text Solution
|
A moving coil galvanometer has N numbr of turns in a coil of effective...
Text Solution
|
A small coil of N turns has an effective area A and carries a current ...
Text Solution
|
A small coil of N turns has area A and a current I flows through it. T...
Text Solution
|
A current of 10 ampere is flowing in a wire of length 1.5m. A force of...
Text Solution
|
A rectangular loop carrying a current i is placed in a uniform magneti...
Text Solution
|
An electron moves with a constant speed v along a circle of radius r. ...
Text Solution
|
Four wires each of length 2.0 meters area bent into four loops P,Q,R a...
Text Solution
|
A current carrying rectangular coil is placed in a uniform magnetic fi...
Text Solution
|
A current carrying circular loop is freely suspended by a long thread....
Text Solution
|
A current carrying loop is free to turn in a uniform magnetic field.Th...
Text Solution
|
The expression for the torque acting on a coil having area of crosssec...
Text Solution
|
The sensitiveness of a moving coil galvanometer can be increased by de...
Text Solution
|
Two parallel conductors A and B of equal lengths carry currents I and ...
Text Solution
|
Three long, straight and parallel wires are arranged as shown in Fig. ...
Text Solution
|
A 100 turns coil shown in figure carries a current of 2 amp in a magne...
Text Solution
|
A current of 5 ampere is flowing in a wire of length 1.5 metres. A for...
Text Solution
|
A conductor in the form of a right angle ABC with AB=3 cm and BC = 4 c...
Text Solution
|
The coild of a galvanometer consists of 100 turn and effective area 1 ...
Text Solution
|