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What will be a magnetic field at centre of the current-carrying circular loop of radius :-
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Important Questions on Magnetic Effect of Current
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A horizontal current-carrying wire is placed in a magnetic field that is perpendicular to the length of the wire. If the wire is in equilibrium, find the value of the magnetic field:-
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A square loop carrying a current is placed near and coplanar with a long straight conductor carrying a current , the net force on the loop will be:-
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A long straight wire of radius carries a steady current . The current is uniformly distributed over its cross-section. The ratio of the magnetic fields and , at radial distances and respectively, from the axis of the wire is :
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A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is . It is then bent into a circular coil of turns. The magnetic field at the centre of this coil of turns will be,
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A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The energy required to rotate it by is Now the torque required to keep the magnet in this new position is
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An electron is moving in a circular path under the influence of a transverse magnetic field of If the value of is the frequency of revolution of the electron is
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A current-carrying wire is in form of a square loop of side length . Current in the wire is . Find out the magnetic field at centre of the loop.
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Find out the magnetic field at a point ?
