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PRACTICE / Faraday law

Flux changes through fifty turns

The magnetic flux through each turn of a 50-turn coil falls uniformly from 0.004 Wb to 0.001 Wb in 0.10 s.

Find the induced emf magnitude.

Organize the givens & assumptions
  • N = 50
  • Φi = 0.004 Wb
  • Φf = 0.001 Wb
  • Δt = 0.10 s

Fixed coil with 50 turns; stated flux is per turn and falls uniformly; emf magnitude requested.

  1. A1.5 V1.5\ \mathrm V
  2. B0.030 V0.030\ \mathrm V
  3. C2 V2\ \mathrm V
  4. D0.15 V0.15\ \mathrm V

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