If the plane of the rectangular coil is parallel to the field, the torque on the coil is
Correct answer: A. Torque = NIA\(_B\) cos(\( \theta \))
- A. Torque = NIA\(_B\) cos(\( \theta \))
- B. Torque = N\(_1\)AB \(\sin(\alpha)\)
- C. Both "a" and "b"
- D. Torque = NIA\(_B\)
Explanation
Torque on a Rectangular Coil Parallel to the Magnetic Field.When the plane of a rectangular coil is parallel to the magnetic field, the torque (\( \tau \)) on the coil can be determined by the formula:\[ \text{Torque} = \text{NIA}B \sin(\theta) \]This option represents torque with the term \( \cos(\theta) \), but when the coil is parallel to the field, \( \theta = 0^\circ \) and \( \sin(0^\circ) = 0 \), not \( \cos(0^\circ) = 1 \). Therefore, the formula doesn't accurately represent the torque when the coil is parallel to the field.
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