📊 Engineering Materials
Q. Residual magnetism is
  • (A) Magnetism left in a sample after a decade
  • (B) Magnetism left in a sample after one year
  • (C) Flux density present in a material after magnetising force is removed
  • (D) The magnetic force required to fully demagnetise a sample
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✅ Correct Answer: (C) Flux density present in a material after magnetising force is removed

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