about an B4. A square coil of 12 cm side and with 144 turns is rotated at a uniform speed of 1440 rpm axis right angles to a uniform field of flux density 0.5 T. calculate the instantaneous value of the induced emf when (1) the plane of the coil is at 90° to the field; (ii) the normal of the coil is at 30° to the field; (iii) the plane of the coil is at 30° to the field and (iv) the normal of the coil is at 90° to the field.
about an B4. A square coil of 12 cm side and with 144 turns is rotated at a uniform speed of 1440 rpm axis right angles to a uniform field of flux density 0.5 T. calculate the instantaneous value of the induced emf when (1) the plane of the coil is at 90° to the field; (ii) the normal of the coil is at 30° to the field; (iii) the plane of the coil is at 30° to the field and (iv) the normal of the coil is at 90° to the field.
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Transcribed Image Text:B4. A square coil of 12 cm side and with 144 turns is rotated at a uniform speed of 1440 rpm about an
axis right angles to a uniform field of flux density 0.5 T. calculate the instantaneous value of the induced
emf when (i) the plane of the coil is at 90° to the field; (ii) the normal of the coil is at 30° to the field; (iii)
the plane of the coil is at 30° to the field and (iv) the normal of the coil is at 90° to the field.
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