A rectangular coil PQRS of wire is free to rotate about its axis XY , as shown in Fig. 6.1. The coil has length QR of 5.4 cm , width PQ of 2.5 cm and has 190 turns of wire. The plane of the coil is at an angle $$\(\theta\)$$ to a uniform magnetic field of flux density $$\(5.2 \times 10^{-3} \mathrm{~T}\)$$. The axis $$\(X Y\)$$ of the coil is normal to the field. The current in the coil is 1.2 A . Calculate the magnitude of the force on side QR of the coil. force = ................................................. N [ with an appropriate scale.

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