01. Earth Magnetism
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Magnetism and Matter

154130 A circular coil of radius $10 \mathrm{~cm}, 500$ turns of wire of total resistance $2 \Omega$ is placed with its plane perpendicular to the horizontal component of the Earth's magnetic field. It is rotated about its vertical diameter by $180^{\circ}$ in 0.25 seconds. Estimate the induced e.m.f. in the coil (Given the horizontal component of Earth's field $=\mathbf{3} \times \mathbf{1 0}^{-5} \mathrm{~T}$ )

1 $4 \times 10^{-3} \mathrm{~V}$
2 $6 \times 10^{-3} \mathrm{~V}$
3 $8 \times 10^{-3} \mathrm{~V}$
4 $10 \times 10^{-3} \mathrm{~V}$
AMU-2019
Magnetism and Matter

154131 If the earth's magnetic field at the equator is $0.4 \mathrm{G}$, then the earth's dipole moment is nearly (Radius of the earth $=6400 \mathrm{~km}$ )

1 $0.73 \times 10^{22} \mathrm{Am}^{2}$
2 $1.5 \times 10^{22} \mathrm{Am}^{2}$
3 $0.87 \times 10^{23} \mathrm{Am}^{2}$
4 $1.05 \times 10^{23} \mathrm{Am}^{2}$
AP EAMCET-24.04.2019
Magnetism and Matter

154132 Assertion: If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction
Reason: Dip needle will stay vertical at the north pole of earth.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-25.05.2019(M) Shift-1
Magnetism and Matter

154133 In the magnetic meridian of a certain place, the vertical component of the earth's magnetic field is $0.3464 \mathrm{G}$ and the dip angle is $30^{\circ}$. The horizontal component of the earth's magnetic field at this location is

1 $0.4 \mathrm{G}$
2 $0.6 \mathrm{G}$
3 $0.7 \mathrm{G}$
4 $0.8 \mathrm{G}$
AP EAMCET (20.04.2019) Shift-1
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Magnetism and Matter

154130 A circular coil of radius $10 \mathrm{~cm}, 500$ turns of wire of total resistance $2 \Omega$ is placed with its plane perpendicular to the horizontal component of the Earth's magnetic field. It is rotated about its vertical diameter by $180^{\circ}$ in 0.25 seconds. Estimate the induced e.m.f. in the coil (Given the horizontal component of Earth's field $=\mathbf{3} \times \mathbf{1 0}^{-5} \mathrm{~T}$ )

1 $4 \times 10^{-3} \mathrm{~V}$
2 $6 \times 10^{-3} \mathrm{~V}$
3 $8 \times 10^{-3} \mathrm{~V}$
4 $10 \times 10^{-3} \mathrm{~V}$
AMU-2019
Magnetism and Matter

154131 If the earth's magnetic field at the equator is $0.4 \mathrm{G}$, then the earth's dipole moment is nearly (Radius of the earth $=6400 \mathrm{~km}$ )

1 $0.73 \times 10^{22} \mathrm{Am}^{2}$
2 $1.5 \times 10^{22} \mathrm{Am}^{2}$
3 $0.87 \times 10^{23} \mathrm{Am}^{2}$
4 $1.05 \times 10^{23} \mathrm{Am}^{2}$
AP EAMCET-24.04.2019
Magnetism and Matter

154132 Assertion: If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction
Reason: Dip needle will stay vertical at the north pole of earth.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-25.05.2019(M) Shift-1
Magnetism and Matter

154133 In the magnetic meridian of a certain place, the vertical component of the earth's magnetic field is $0.3464 \mathrm{G}$ and the dip angle is $30^{\circ}$. The horizontal component of the earth's magnetic field at this location is

1 $0.4 \mathrm{G}$
2 $0.6 \mathrm{G}$
3 $0.7 \mathrm{G}$
4 $0.8 \mathrm{G}$
AP EAMCET (20.04.2019) Shift-1
NEET DIGITAL LIBRARY
Magnetism and Matter

154130 A circular coil of radius $10 \mathrm{~cm}, 500$ turns of wire of total resistance $2 \Omega$ is placed with its plane perpendicular to the horizontal component of the Earth's magnetic field. It is rotated about its vertical diameter by $180^{\circ}$ in 0.25 seconds. Estimate the induced e.m.f. in the coil (Given the horizontal component of Earth's field $=\mathbf{3} \times \mathbf{1 0}^{-5} \mathrm{~T}$ )

1 $4 \times 10^{-3} \mathrm{~V}$
2 $6 \times 10^{-3} \mathrm{~V}$
3 $8 \times 10^{-3} \mathrm{~V}$
4 $10 \times 10^{-3} \mathrm{~V}$
AMU-2019
Magnetism and Matter

154131 If the earth's magnetic field at the equator is $0.4 \mathrm{G}$, then the earth's dipole moment is nearly (Radius of the earth $=6400 \mathrm{~km}$ )

1 $0.73 \times 10^{22} \mathrm{Am}^{2}$
2 $1.5 \times 10^{22} \mathrm{Am}^{2}$
3 $0.87 \times 10^{23} \mathrm{Am}^{2}$
4 $1.05 \times 10^{23} \mathrm{Am}^{2}$
AP EAMCET-24.04.2019
Magnetism and Matter

154132 Assertion: If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction
Reason: Dip needle will stay vertical at the north pole of earth.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-25.05.2019(M) Shift-1
Magnetism and Matter

154133 In the magnetic meridian of a certain place, the vertical component of the earth's magnetic field is $0.3464 \mathrm{G}$ and the dip angle is $30^{\circ}$. The horizontal component of the earth's magnetic field at this location is

1 $0.4 \mathrm{G}$
2 $0.6 \mathrm{G}$
3 $0.7 \mathrm{G}$
4 $0.8 \mathrm{G}$
AP EAMCET (20.04.2019) Shift-1
Join With Us for More Updates
Magnetism and Matter

154130 A circular coil of radius $10 \mathrm{~cm}, 500$ turns of wire of total resistance $2 \Omega$ is placed with its plane perpendicular to the horizontal component of the Earth's magnetic field. It is rotated about its vertical diameter by $180^{\circ}$ in 0.25 seconds. Estimate the induced e.m.f. in the coil (Given the horizontal component of Earth's field $=\mathbf{3} \times \mathbf{1 0}^{-5} \mathrm{~T}$ )

1 $4 \times 10^{-3} \mathrm{~V}$
2 $6 \times 10^{-3} \mathrm{~V}$
3 $8 \times 10^{-3} \mathrm{~V}$
4 $10 \times 10^{-3} \mathrm{~V}$
AMU-2019
Magnetism and Matter

154131 If the earth's magnetic field at the equator is $0.4 \mathrm{G}$, then the earth's dipole moment is nearly (Radius of the earth $=6400 \mathrm{~km}$ )

1 $0.73 \times 10^{22} \mathrm{Am}^{2}$
2 $1.5 \times 10^{22} \mathrm{Am}^{2}$
3 $0.87 \times 10^{23} \mathrm{Am}^{2}$
4 $1.05 \times 10^{23} \mathrm{Am}^{2}$
AP EAMCET-24.04.2019
Magnetism and Matter

154132 Assertion: If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction
Reason: Dip needle will stay vertical at the north pole of earth.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-25.05.2019(M) Shift-1
Magnetism and Matter

154133 In the magnetic meridian of a certain place, the vertical component of the earth's magnetic field is $0.3464 \mathrm{G}$ and the dip angle is $30^{\circ}$. The horizontal component of the earth's magnetic field at this location is

1 $0.4 \mathrm{G}$
2 $0.6 \mathrm{G}$
3 $0.7 \mathrm{G}$
4 $0.8 \mathrm{G}$
AP EAMCET (20.04.2019) Shift-1
For More Updates join with Us