MCQOPTIONS
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MCQOPTIONS
| 1. |
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectionalarea of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? |
| A. | 63.38 n/wb |
| B. | 633.8 n/wb |
| C. | 6338 n/wb |
| D. | 63380 n/wb |
| Answer» D. 63380 n/wb | |