MEDIUM
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IMPORTANT
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A closely wound flat circular coil of turns of wire has diameter of and carries a current of ampere. Determine the magnetic flux density at the centre of the coil
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Important Questions on Magnetic Effect of Current
MEDIUM
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IMPORTANT
Ampere current is flowing through a long straight wire. Due to this a field of is produced, then distance of the point from the axis of the wire is
HARD
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IMPORTANT
Radius of a current carrying coil is . The ratio of magnetic field at an axial point which is distance away from the centre of the coil to the magnetic field at the centre of the coil
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When the current flowing in a circular coil is doubled and the number of turns of the coil in it is halved, the magnetic field at its centre will become :-
EASY
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IMPORTANT
Which of the following statement is not true; magnetic field at the centre of current carrying loop :-
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IMPORTANT
A circular coil of radius R carries an electric current. The magnetic field due the coil at a point on the axis of the coil located at a distance r from the center of the coil, such that r >> R varies as :-
MEDIUM
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IMPORTANT
Two concentric circular loops of radii 0.08m and 0.1 m carries current such that magnetic field at the centre is zero. If the current in the outer loop is 8A clockwise, current in the inner loop is :-
MEDIUM
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IMPORTANT
In the shown figure magnetic field at point A will be
MEDIUM
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IMPORTANT
If radius of loop becomes two times and current becomes half then magnetic field at centre of the loop will be :-
