MCQOPTIONS
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MCQOPTIONS
| 1. |
One metre length of wire carries a constant current. The wire is bent to form a circular loop. The magnetic field at the centre of this loop is B. The same is now bent to form a circular loop of smaller radius to have four turns in the loop. The magnetic field at the centre of this new loop is |
| A. | 4 B |
| B. | 16 B |
| C. | \[B/2\] |
| D. | \[B/4\] |
| Answer» C. \[B/2\] | |