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The magnetic field perpendicular to the plane of a loop of area 0.1 m2 is 0.2 T. Calculate the magnetic flux through the loop.

Important Questions on Magnetic Effect of Current

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The magnetic field in a certain region is given by B=(4i^-k^) tesla. How much magnetic flux passes through the loop of area 0.1m2 in this region if the loop lies flat in xy plane ?
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A solenoid 4cm in diameter and 20cm in length has 250 turns and carries a current of 15A. Calculate the flux through the surface of a disc of 10cm radius that is positioned perpendicular to and centered on the axis of the solenoid.
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 A proton moves along horizontal line and towards observer, the pattern of concentric circular field lines of magnetic field which produced due to its motion : 
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An electron moves along vertical line and towards observer, the pattern of concentric circular field lines of magnetic field which is produced due to its motion : 
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A current is flowing in electricity line towards north, the direction of magnetic field at a point which is just below the line :
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A current is flowing in a vertical wire in downward direction, the direction of magnetic field of a point which is just right side to the wire :
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An equilateral triangle of a side a carries a current I. The magnetic field at a point P, which is the vertex of the triangle:

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Two infinite length wires carry equal current and placed along x and y-axis respectively. At which points the resultant magnetic field is zero ?

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