AC Fundamentals, Circuit and Circuit Theory
The square waveform of current has following relation between r.m.s. value and average value.

None of these
r.m.s. value of current is greater than average value
r.m.s. value of current is less than average value
r.m.s. value is equal to average value

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AC Fundamentals, Circuit and Circuit Theory
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

Both waves must have zero value at the same time
Both waves must have identical peak values
None of the listed here
Both waves must have same frequency

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