MCQOPTIONS
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| 1. |
The materials suitable for making electromagnets should have |
| A. | High retentivity and high coercivity |
| B. | Low retentivity and low coercivity |
| C. | High retentivity and low coercivity |
| D. | Low retentivity and high coercivity. |
| Answer» D. Low retentivity and high coercivity. | |