Magnetism

An infinite current-carrying wire passes through point O and in perpendicular to the plane containing a current-carrying loop ABCD as shown in the figure. Choose the correct option(s):

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In a moving coil galvanometer, torque on the coil can be expressed as \(\tau=k i\), where \(i\) is current through the wire and \(k\) is constant. The rectangular coil of the galvanometer having numbers of turns \(\mathrm{N}\), area $$\math...