Find the time required for a 50 Hz alternating current to become its value from zero the rms value
A
10.0 ms
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B
2.5 ms
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C
13.0 ms
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D
5.0 ms
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Solution
The correct option is B 5.0 ms Given, the frequency of alternating current f =50Hz The time for alternating current to become its tins value from zero. t=T4 or t=14f or t=1200s or t=5ms