Torque on current carrying coil is maximum when outward normal to the plane of coil is
Correct answer: B. perpendicular to magnetic field
- A. parallel to magnetic field
- B. perpendicular to magnetic field
- C. inclined at 45° to magnetic field
- D. inclined at 60° to magnetic field
Explanation
B is the correct answer.The torque experienced by a current carrying coil in a magnetic field is given by the formula τ=NIABsinθ, where N is the number of turns, I is the current, A is the area of the coil,B is the magnetic field strength, and θ is the angle between the magnetic field and the normal to the plane of the coil. The maximum torque occurs when θ=90∘, which means the outward normal to the plane of the coil is perpendicular to the magnetic field.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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