MCQOPTIONS
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MCQOPTIONS
| 1. |
A resistance of 20 ohms is connected to a source of an alternating potential \[V=220\sin (100\pi t)\]. The time taken by the current to change from its peak value to r.m.s value is [MP PET 2001] |
| A. | 0.2 sec |
| B. | 0.25 sec |
| C. | \[25\times {{10}^{-3}}\]sec |
| D. | \[2.5\times {{10}^{-3}}\]sec |
| Answer» E. | |