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Question

In a certain circuit current changes with time according to i = 2t r.m.s. value of current between t = 2 to t = 4s will be

A
3A
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B
3√3 A
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C
2√3 A
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D
(2 - √2)A
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Solution

The correct option is C 2√3 A

i2= i2dt dt=42(4t)dt42dt=442t dt2=2[t22]42=[t2]42=12

irms=i2=12=23A


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