MCQOPTIONS
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MCQOPTIONS
| 1. |
Magnetic field due to a ring having n turns at a distance x on its axis is proportional to (if r = radius of ring) [RPET 2000] |
| A. | \[\frac{r}{({{x}^{2}}+{{r}^{2}})}\] |
| B. | \[\frac{{{r}^{2}}}{{{({{x}^{2}}+{{r}^{2}})}^{3/2}}}\] |
| C. | If assertion is true but reason is false. |
| D. | \[\frac{{{n}^{2}}{{r}^{2}}}{{{({{x}^{2}}+{{r}^{2}})}^{3/2}}}\] |
| Answer» D. \[\frac{{{n}^{2}}{{r}^{2}}}{{{({{x}^{2}}+{{r}^{2}})}^{3/2}}}\] | |