Physics · Para-, dia- and ferromagnetic substances with examples, the effect of temperature on magnetic properties
Alnico is used for making permanent magnets because it has
Alnico is used for making permanent magnets because it has
- A. High coercivity and high retentivity
- B. high coercivity and low retentivity
- C. low coercivity and low retentivity
- D. low coercivity and high retentivity
Step-by-step solution
Permanent magnets require materials that are not easily demagnetized (high coercivity) and can retain a strong magnetic field (high retentivity). Alnico is a ferromagnetic alloy with these properties.
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