MCQOPTIONS
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| 1. |
Piezoelectric is: |
| A. | material which becomes polarised when stressed |
| B. | a material which changes dimensions due to applied field |
| C. | a material that has properties midway between those of magnetic and non magnetic materials |
| D. | a material in which magnetising force reduces when current flowing is increased |
| Answer» B. a material which changes dimensions due to applied field | |