Question: The figure shows hysteresis curves for three different materials. A hysteresis curve is a plot of the magnetic field strength inside the material (B) as

The figure shows hysteresis curves for three different materials. A hysteresis curve is a plot of the magnetic field strength inside the material (B) as a function of the externally applied field (B0).
(a) Which material would make the best permanent magnet? Explain.
(b) Which would make the best core for an electromagnet? Explain.

B4 B4 B4 Bo (c) (b) (a)

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a The best permanent magnet is obtained when Bfinal B 0 max is greatest Figure a show... View full answer

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