The lifting power of a magnet is inversely proportional to _______.

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SSC JE Electrical 16 Nov 2022 Shift 3 Official Paper
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  1. radius of the conductor
  2. absolute permeability
  3. cross-sectional area
  4. square of the magnetic flux density

Answer (Detailed Solution Below)

Option 2 : absolute permeability
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The correct answer is option 2):(absolute permeability)

Concept:

Lifting power is defined as

F= \(B^ 2s\over 2μ\)

B: Magnetic flux density

μ: permeability of the medium

The lifting power of a magnet is inversely proportional to absolute permeability

Increase in the magnetic strength means increasing the lifting power of an electromagnet

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