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When current is double deflection is also doubled in
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A magnetic needle suspended freely orients itself:-
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A particle having charge 100 times that of an electron is revolving in a circular path by radius 0.8 with one rotation per second. The magnetic field produced at the centre is
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The horizontal component of earth’s magnetic field at a place is `sqrt3` times the vertical component. The angle of dip at that place is ______.
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If the change in value of g at height h above the surface of the earth is the same as at a depth d below the surface of the earth, when both d and h are much smaller than the radius of the Earth, then which one of the following is true?
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A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth. Then,
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In a certain region of space, the electric field is zero. From this fact, what can you conclude about the electric potential in this region?
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A 10-meter wire is kept in east-west direction. It is falling down with a speed of 5.0 meter/second, perpendicular to the horizontal component of earth's magnetic field of 0.30 × 10−4 weber/meter2. The momentary potential difference induced between the ends of the wire will be:
Concept: undefined >> undefined
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 × 10-15m is
Concept: undefined >> undefined
The vertical component of earth's magnetic field is zero at a place where angle of dip is
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At a place of latitude 5°, angle of dip is nearly
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At a certain place horizontal component is `sqrt(3^2)` time the vertical component. The angle of dip at this place.
Concept: undefined >> undefined
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Metals getting magnetised by orientation of atomic magnetic moments in external magnetic field are called ______.
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The magnetic susceptibility for diamagnetic materials is ______.
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When a ferromagnetic material is created above its curie temperature
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Earth's magnetic field analyses has a horizontal component except at:-
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A hydrogen atom is paramagnetic. A hydrogen molecule is
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For a diamagnetic material
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