MCQOPTIONS
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| 1. |
A step-up transformer operates on a 230 V line and supplies a load of 2 ampere. The ratio of the primary and secondary windings is 1 : 25. The current in the primary is [CBSE PMT 1998] |
| A. | 15 A |
| B. | 50 A |
| C. | 25 A |
| D. | 12.5 A |
| Answer» C. 25 A | |