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In a certain circuit current changes with time according to `i=2sqrt(t)` RMS value of current between t=2s to t=4s will beA. 3AB. `3sqrt(3)`AC. `2sqrt(3)`D. `sqrt(3)`A |
Answer» Correct Answer - C `i_(rms)^(2) = (int i^(2)dt)/(int dt)` `=(int_(2)^(4)dt)/(int_(2)^(4)dt) = (4int_(2)^(4)tdt)/(2)= 2[t^(2)/2]_(-2)^(4) = 12A^(2)` `rArr i_(rms) = 2sqrt(3)A` |
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