MCQOPTIONS
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MCQOPTIONS
| 1. |
An ac source of angular frequency co is fed across a resistor R and a capacitor C in series. The current registered is I. If now the frequency of source is changed to \[\omega /3\] (but maintaining the same voltage), the current in the circuit is found to be halved. Then the ratio of reactance to resistance at the original frequency \[\omega \]is |
| A. | \[\sqrt{3/5}\] |
| B. | \[\sqrt{5/3}\] |
| C. | \[\sqrt{2/3}\] |
| D. | \[\sqrt{3/2}\] |
| Answer» B. \[\sqrt{5/3}\] | |