MCQOPTIONS
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| 1. |
Which among these materials have a relative permeability of 1? i. Air ii. Copper iii. Iron iv. Nickel |
| A. | i and ii only |
| B. | i and iii only |
| C. | i and iv only |
| D. | iii and iv only |
| Answer» B. i and iii only | |