MCQOPTIONS
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MCQOPTIONS
| 1. |
A and B are two concentric circular conductors of centre O and carrying currents \[{{I}_{1}}\] and \[{{i}_{2}}\] as shown in the adjacent figure. If ratio of their radii is 1 : 2 and ratio of the flux densities at O due to A and B is 1 : 3, then the value of \[{{i}_{1}}/{{i}_{2}}\] is [KCET 2000] |
| A. | \[\frac{1}{6}\] |
| B. | \[\frac{1}{4}\] |
| C. | \[\frac{1}{3}\] |
| D. | \[\frac{1}{2}\] |
| Answer» B. \[\frac{1}{4}\] | |