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Question

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
738831_678060_ans_7cf4303e717d44d19054a60e1aa3b315.png

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