01. Earth Magnetism
« Previous Topic: 00. Magnet and Magnetic Dipole Next Topic: 02. Moving Coil Galvanometer and Magnetic Device »
Magnetism and Matter

154109 The total intensity of earth's magnetic field at the poles is $\mathbf{7}$ units. Its value at the equator is

1 $7 \sqrt{2}$ units
2 3.5 units
3 7 units
4 $\frac{7}{\sqrt{2}}$ units
5 14 units
Kerala CEE 2021
Magnetism and Matter

154110 Torques $\tau_{1}$ and $\tau_{2}$ are required for a magnetic needle to remain perpendicular to the magnetic field $B_{1}$ and $B_{2}$ at two different places. The ratio $B_{1} / B_{2}$ is

1 $\tau_{2} / \tau_{1}$
2 $\tau_{1} / \tau_{2}$
3 $\frac{\tau_{1}+\tau_{2}}{\tau_{1}-\tau_{2}}$
4 $\frac{\tau_{1}-\tau_{2}}{\tau_{1}+\tau_{2}}$
AP EAMCET-24.08.2021
Magnetism and Matter

154111 The earth's magnetic field at a certain place has a horizontal component $0.3 \mathrm{G}$ and the total strength $0.5 \mathrm{G}$. The angle of dip is

1 $\tan ^{-1}\left(\frac{3}{4}\right)$
2 $\sin ^{-1}\left(\frac{3}{4}\right)$
3 $\tan ^{-1}\left(\frac{4}{3}\right)$
4 $\sin ^{-1}\left(\frac{4}{3}\right)$
AP EAMCET-03.09.2021
Magnetism and Matter

154112 The total intensity of the earth's magnetic field at equator is 5 units. What is its value at the poles?

1 5
2 4
3 3
4 2
AP EAMCET-06.09.2021
Magnetism and Matter

154113 A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is $20 \mu \mathrm{T}$. If the neutral point is found at a distance of $20 \mathrm{~cm}$ in the plane bisecting the dipole then the magnetic moment of the dipole is:
(Assume $\mu_{0}=4 \pi \times 10^{-7} \mathrm{~S}$.I units)

1 $1.2 \mathrm{Am}^{2}$
2 $2.2 \mathrm{Am}^{2}$
3 $1.4 \mathrm{Am}^{2}$
4 $1.6 \mathrm{Am}^{2}$
TS EAMCET 05.08.2021
Join With Us for More Updates
Magnetism and Matter

154109 The total intensity of earth's magnetic field at the poles is $\mathbf{7}$ units. Its value at the equator is

1 $7 \sqrt{2}$ units
2 3.5 units
3 7 units
4 $\frac{7}{\sqrt{2}}$ units
5 14 units
Kerala CEE 2021
Magnetism and Matter

154110 Torques $\tau_{1}$ and $\tau_{2}$ are required for a magnetic needle to remain perpendicular to the magnetic field $B_{1}$ and $B_{2}$ at two different places. The ratio $B_{1} / B_{2}$ is

1 $\tau_{2} / \tau_{1}$
2 $\tau_{1} / \tau_{2}$
3 $\frac{\tau_{1}+\tau_{2}}{\tau_{1}-\tau_{2}}$
4 $\frac{\tau_{1}-\tau_{2}}{\tau_{1}+\tau_{2}}$
AP EAMCET-24.08.2021
Magnetism and Matter

154111 The earth's magnetic field at a certain place has a horizontal component $0.3 \mathrm{G}$ and the total strength $0.5 \mathrm{G}$. The angle of dip is

1 $\tan ^{-1}\left(\frac{3}{4}\right)$
2 $\sin ^{-1}\left(\frac{3}{4}\right)$
3 $\tan ^{-1}\left(\frac{4}{3}\right)$
4 $\sin ^{-1}\left(\frac{4}{3}\right)$
AP EAMCET-03.09.2021
Magnetism and Matter

154112 The total intensity of the earth's magnetic field at equator is 5 units. What is its value at the poles?

1 5
2 4
3 3
4 2
AP EAMCET-06.09.2021
Magnetism and Matter

154113 A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is $20 \mu \mathrm{T}$. If the neutral point is found at a distance of $20 \mathrm{~cm}$ in the plane bisecting the dipole then the magnetic moment of the dipole is:
(Assume $\mu_{0}=4 \pi \times 10^{-7} \mathrm{~S}$.I units)

1 $1.2 \mathrm{Am}^{2}$
2 $2.2 \mathrm{Am}^{2}$
3 $1.4 \mathrm{Am}^{2}$
4 $1.6 \mathrm{Am}^{2}$
TS EAMCET 05.08.2021
For More Updates join with Us
Magnetism and Matter

154109 The total intensity of earth's magnetic field at the poles is $\mathbf{7}$ units. Its value at the equator is

1 $7 \sqrt{2}$ units
2 3.5 units
3 7 units
4 $\frac{7}{\sqrt{2}}$ units
5 14 units
Kerala CEE 2021
Magnetism and Matter

154110 Torques $\tau_{1}$ and $\tau_{2}$ are required for a magnetic needle to remain perpendicular to the magnetic field $B_{1}$ and $B_{2}$ at two different places. The ratio $B_{1} / B_{2}$ is

1 $\tau_{2} / \tau_{1}$
2 $\tau_{1} / \tau_{2}$
3 $\frac{\tau_{1}+\tau_{2}}{\tau_{1}-\tau_{2}}$
4 $\frac{\tau_{1}-\tau_{2}}{\tau_{1}+\tau_{2}}$
AP EAMCET-24.08.2021
Magnetism and Matter

154111 The earth's magnetic field at a certain place has a horizontal component $0.3 \mathrm{G}$ and the total strength $0.5 \mathrm{G}$. The angle of dip is

1 $\tan ^{-1}\left(\frac{3}{4}\right)$
2 $\sin ^{-1}\left(\frac{3}{4}\right)$
3 $\tan ^{-1}\left(\frac{4}{3}\right)$
4 $\sin ^{-1}\left(\frac{4}{3}\right)$
AP EAMCET-03.09.2021
Magnetism and Matter

154112 The total intensity of the earth's magnetic field at equator is 5 units. What is its value at the poles?

1 5
2 4
3 3
4 2
AP EAMCET-06.09.2021
Magnetism and Matter

154113 A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is $20 \mu \mathrm{T}$. If the neutral point is found at a distance of $20 \mathrm{~cm}$ in the plane bisecting the dipole then the magnetic moment of the dipole is:
(Assume $\mu_{0}=4 \pi \times 10^{-7} \mathrm{~S}$.I units)

1 $1.2 \mathrm{Am}^{2}$
2 $2.2 \mathrm{Am}^{2}$
3 $1.4 \mathrm{Am}^{2}$
4 $1.6 \mathrm{Am}^{2}$
TS EAMCET 05.08.2021
NEET DIGITAL LIBRARY
Magnetism and Matter

154109 The total intensity of earth's magnetic field at the poles is $\mathbf{7}$ units. Its value at the equator is

1 $7 \sqrt{2}$ units
2 3.5 units
3 7 units
4 $\frac{7}{\sqrt{2}}$ units
5 14 units
Kerala CEE 2021
Magnetism and Matter

154110 Torques $\tau_{1}$ and $\tau_{2}$ are required for a magnetic needle to remain perpendicular to the magnetic field $B_{1}$ and $B_{2}$ at two different places. The ratio $B_{1} / B_{2}$ is

1 $\tau_{2} / \tau_{1}$
2 $\tau_{1} / \tau_{2}$
3 $\frac{\tau_{1}+\tau_{2}}{\tau_{1}-\tau_{2}}$
4 $\frac{\tau_{1}-\tau_{2}}{\tau_{1}+\tau_{2}}$
AP EAMCET-24.08.2021
Magnetism and Matter

154111 The earth's magnetic field at a certain place has a horizontal component $0.3 \mathrm{G}$ and the total strength $0.5 \mathrm{G}$. The angle of dip is

1 $\tan ^{-1}\left(\frac{3}{4}\right)$
2 $\sin ^{-1}\left(\frac{3}{4}\right)$
3 $\tan ^{-1}\left(\frac{4}{3}\right)$
4 $\sin ^{-1}\left(\frac{4}{3}\right)$
AP EAMCET-03.09.2021
Magnetism and Matter

154112 The total intensity of the earth's magnetic field at equator is 5 units. What is its value at the poles?

1 5
2 4
3 3
4 2
AP EAMCET-06.09.2021
Magnetism and Matter

154113 A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is $20 \mu \mathrm{T}$. If the neutral point is found at a distance of $20 \mathrm{~cm}$ in the plane bisecting the dipole then the magnetic moment of the dipole is:
(Assume $\mu_{0}=4 \pi \times 10^{-7} \mathrm{~S}$.I units)

1 $1.2 \mathrm{Am}^{2}$
2 $2.2 \mathrm{Am}^{2}$
3 $1.4 \mathrm{Am}^{2}$
4 $1.6 \mathrm{Am}^{2}$
TS EAMCET 05.08.2021
Join With Us for More Updates
Magnetism and Matter

154109 The total intensity of earth's magnetic field at the poles is $\mathbf{7}$ units. Its value at the equator is

1 $7 \sqrt{2}$ units
2 3.5 units
3 7 units
4 $\frac{7}{\sqrt{2}}$ units
5 14 units
Kerala CEE 2021
Magnetism and Matter

154110 Torques $\tau_{1}$ and $\tau_{2}$ are required for a magnetic needle to remain perpendicular to the magnetic field $B_{1}$ and $B_{2}$ at two different places. The ratio $B_{1} / B_{2}$ is

1 $\tau_{2} / \tau_{1}$
2 $\tau_{1} / \tau_{2}$
3 $\frac{\tau_{1}+\tau_{2}}{\tau_{1}-\tau_{2}}$
4 $\frac{\tau_{1}-\tau_{2}}{\tau_{1}+\tau_{2}}$
AP EAMCET-24.08.2021
Magnetism and Matter

154111 The earth's magnetic field at a certain place has a horizontal component $0.3 \mathrm{G}$ and the total strength $0.5 \mathrm{G}$. The angle of dip is

1 $\tan ^{-1}\left(\frac{3}{4}\right)$
2 $\sin ^{-1}\left(\frac{3}{4}\right)$
3 $\tan ^{-1}\left(\frac{4}{3}\right)$
4 $\sin ^{-1}\left(\frac{4}{3}\right)$
AP EAMCET-03.09.2021
Magnetism and Matter

154112 The total intensity of the earth's magnetic field at equator is 5 units. What is its value at the poles?

1 5
2 4
3 3
4 2
AP EAMCET-06.09.2021
Magnetism and Matter

154113 A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is $20 \mu \mathrm{T}$. If the neutral point is found at a distance of $20 \mathrm{~cm}$ in the plane bisecting the dipole then the magnetic moment of the dipole is:
(Assume $\mu_{0}=4 \pi \times 10^{-7} \mathrm{~S}$.I units)

1 $1.2 \mathrm{Am}^{2}$
2 $2.2 \mathrm{Am}^{2}$
3 $1.4 \mathrm{Am}^{2}$
4 $1.6 \mathrm{Am}^{2}$
TS EAMCET 05.08.2021