Where on the earth’s surface is the value of vertical component of earth’s magnetic field zero?
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The equation for magnetic force on charge ‘q’ moving perpendicular to the magnetic field is
Correct option is A) F = Bqv
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The equation for magnetic force on a current carrying wire of length T/ which makes an angle ‘θ’ with the magnetic field is ……………….
B) F = BIL sinθ
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The equation for magnetic force on a current carrying wire of length T/ which is placed perpendicular to a magnetic field is ………………….
Correct option is A) F = BIL
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How do we determine strength of magnetic field at a given point due to a magnet? Write down units of magnetic field in SI and CGS system
i. Density of lines of force i.e., the number of lines of force per unit area around a particular point determines the strength of the magnetic field at that point. ii....
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Define the following magnetic parameters. i. Magnetic axis ii. Magnetic equator iii. Magnetic Meridian
i. Magnetic axis: The Earth is considered to be a huge magnetic dipole. The straight line joining the two poles is called the magnetic axis. ii. Magnetic equator: A great circle in...
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A magnetic dipole has magnetic length 10 cm and pole strength 100 Am. Its magnetic dipole moment is ……… Am^2.
Correct option is: (C) 10
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Compute the magnitude of the magnetic field of a long, straight wire carrying a current of 1 A at distance of 1m from it. Compare it with Earth’s magnetic field.
Magnetic field due to a long wire B = μ x 2I / 4π r where I is current and μ / 4π = 10-7 , r is distance from the wire Putting...
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Assertion (A): Magnetic force is a field force. Reason (R): A magnet can attract or repel another magnet with zero magnitude.
C) A is true, but R is false
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Where on the earth’s surface is the value of angle of dip maximum? OR Where on the surface of earth is the angle of dip 90°?
Angle of dip (90°) is maximum at magnetic poles.
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Assertion: The time period of revolution of a satellite close to surface of earth is smaller then that revolving away from surface of earth. Reason: T
Correct Answer - A Both the Assertion and the Reason are correct and Reason is correct explanation of Assertion.
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