(B) In a tangent galvanometer,the magnetic field $B_{m}$ produced by the coil (or magnet) is perpendicular to the horizontal component of the earth's

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$1.96 \times 10^{-5} \text{ T}$

(B) In a tangent galvanometer,the magnetic field $B_{m}$ produced by the coil (or magnet) is perpendicular to the horizontal component of the earth's magnetic field $B_{H}$.The deflection $\theta$ is given by the tangent law: $B_{m} = B_{H} \tan \theta$.Given:$B_{H} = 0.34 \times 10^{-4} \text{ T}$$\theta = 30^{\circ}$Substituting the values:$B_{m} = (0.34 \times 10^{-4}) \times \tan 30^{\circ}$$B_{m} = (0.34 \times 10^{-4}) \times \frac{1}{\sqrt{3}}$$B_{m} = \frac{0.34 \times 10^{-4}}{1.732}$$B_{m} \approx 0.1963 \times 10^{-4} \text{ T}$$B_{m} \approx 1.96 \times 10^{-5} \text{ T}$

Class 12 Physics Magnetism and Matter Magnetic Equipment's (Tangent galvanometer, Vibration magnetometer and Neutral point)

Medium

The magnetic needle of a tangent galvanometer is deflected at an angle $30^{\circ}$ due to a magnet. The horizontal component of the earth's magnetic field is $0.34 \times 10^{-4} \text{ T}$,which is along the plane of the coil. The magnetic field due to the magnet is:

A
$1.96 \times 10^{-4} \text{ T}$
B
$1.96 \times 10^{-5} \text{ T}$
C
$1.96 \times 10^{4} \text{ T}$
D
$1.96 \times 10^{5} \text{ T}$

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Magnetic Equipment's (Tangent galvanometer, Vibration magnetometer and Neutral point)

$A$ bar magnet of moment of inertia $49 \times 10^{-2} \,kg-m^2$ vibrates in a magnetic field of induction $0.5 \times 10^{-4} \,T$. The time period of vibration is $8.8 \,s$. The magnetic moment of the bar magnet is (in $\,A-m^2$)

DifficultAP EAMCET 2007

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$A$ magnet freely suspended in a vibration magnetometer makes $40$ oscillations per minute at place $A$ and $20$ oscillations per minute at a place $B$. If the horizontal component of earth's magnetic field at $A$ is $36 \times 10^{-6} \ T$, then its value at $B$ is

DifficultTS EAMCET 2001

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Magnetic moments of two bar magnets may be compared with the help of

Easy

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Two identical bar magnets are held perpendicular to each other with a certain separation,as shown below. The area around the magnets is divided into four zones. Given that there is a neutral point,it is located in:

DifficultKVPY 2014

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$A$ tangent galvanometer has $80$ turns of wire. The internal and external diameters of the coil are $19 \, cm$ and $21 \, cm$ respectively. The reduction factor of the galvanometer at a place where $H = 0.32 \, \text{oersted}$ will be $(1 \, \text{oersted} = 80 \, A/m)$.

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The magnetic needle of a tangent galvanometer is deflected at an angle $30^{\circ}$ due to a magnet. The horizontal component of the earth's magnetic field is $0.34 \times 10^{-4} \text{ T}$,which is along the plane of the coil. The magnetic field due to the magnet is:

Similar Questions

$A$ bar magnet of moment of inertia $49 \times 10^{-2} \,kg-m^2$ vibrates in a magnetic field of induction $0.5 \times 10^{-4} \,T$. The time period of vibration is $8.8 \,s$. The magnetic moment of the bar magnet is (in $\,A-m^2$)

$A$ magnet freely suspended in a vibration magnetometer makes $40$ oscillations per minute at place $A$ and $20$ oscillations per minute at a place $B$. If the horizontal component of earth's magnetic field at $A$ is $36 \times 10^{-6} \ T$, then its value at $B$ is

Magnetic moments of two bar magnets may be compared with the help of

Two identical bar magnets are held perpendicular to each other with a certain separation,as shown below. The area around the magnets is divided into four zones. Given that there is a neutral point,it is located in:

$A$ tangent galvanometer has $80$ turns of wire. The internal and external diameters of the coil are $19 \, cm$ and $21 \, cm$ respectively. The reduction factor of the galvanometer at a place where $H = 0.32 \, \text{oersted}$ will be $(1 \, \text{oersted} = 80 \, A/m)$.

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