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Asked in UHS MDCAT 2016 2016

The force acting on the current-carrying conductor will be maximum if the angle between the magnetic field and conductor is:

Correct answer: C. 90°

  • A. 0°
  • B. 30°
  • C. 90°
  • D. 60°

Explanation

The maximum force on a current-carrying conductor occurs when the current direction and the magnetic field's direction are perpendicular to one another (i.e., a 90-degree angle between directions). F=iBlsinθ. This is the maximum when sin=1 or θ=/2 or 90 degrees.

This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.

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About Magnetic Flux Density

Magnetic flux density measures the magnetic force acting on a current carrying conductor or moving charge in a magnetic field. Work includes the relations B equals F divided by IL and F equals qvB, the tesla as its SI unit, field direction and the distinction between flux density and magnetic flux.

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