Home
Class 12
PHYSICS
The needle of a deflection galvanometer ...

The needle of a deflection galvanometer shows a deflection of `60^(@)` due to a short bar magnet at a certain distance in tan A position. If the distance is doubled, the deflection is

A

`tan ^(-1) ((sqrt2)/(3))`

B

`tan ^(-1) ((sqrt3)/(8))`

C

`tan ^(-1) ((sqrt3)/(5))`

D

none of these

Text Solution

AI Generated Solution

To solve the problem, we need to understand how the deflection of the galvanometer changes with distance when influenced by a bar magnet. Here’s a step-by-step solution: ### Step 1: Understand the initial conditions The initial deflection angle \( \theta \) is given as \( 60^\circ \) at a distance \( d \). ### Step 2: Write the formula for the magnetic field The magnetic field \( H \) at a distance \( d \) due to a bar magnet in the tangent position is given by: \[ ...
Promotional Banner

Similar Questions

Explore conceptually related problems

The tangents deflection produced in tan A and B positions by a short magnet at equal distances are in the ratio .

Two short magnet having magnetic moment in the ratio 27:8 , when placed on the opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is

A deflection magnetometer is placed with its arm along the east-west direction (tan A position) and a short bar magnet is placed symmetrically along its axis at some distance with its north pole pointing towards east. In this position the needle of the magnetometer shows a deflection of 60^(@) . If we double the distance of the bar magnet, then the deflection will be

The needle of a deflection magnetometer deflects through 45^@ from north to south when the instrument is used in Tan-A position with a magnet of length 10cm placed at a distance of 25cm. (a) Find the magnetic moment of the magnet if the earth's horizontal magnetic field is 20 muT . (b) If the magnetometer is used in Tan-B position with the same magnet at the same separation from the needle, what will be the deflection?

The magnetic needle of a tangent galvanometer is deflected at an angle 30^(@) due to a magnet. The hoeizontal component of earth's magnetic field 0.34xx10^(-4)T is along the plane of the coil. The magnetic intensity is

For the following diagram the galvanometer shows zero deflection then what is the value of R?

The ratio of the magnetic fields due to small bar magnet in end position an broad side on position is (at equal distance from the magnet)

The ratio of the magnetic fields due to small bar magnet in end position and on broad side position is (at equal distance from the magnet)

The magnetic field at a distance d from a short bar magnet in longitudinal and transverse positions are in the ratio.

In a circuit for finding the resistance of a galvanometer by half deflection method, a 6 V battery and a high resistance of 11 kOmega are used. The figure of merit of the galvanometer is 60 muA//"division" . In the absence of shunt resistance, the galvanometer produces a deflection of theta =9 divisions when current flows in the circuit. The value of the shunt resistance that can cause the deflection of theta//2 , is closet to :