an alternating current is represented by I=70
sin
520t. determined the frequency e and the current through zero increasing positivity
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0
Answer:
The average value of current can be zero because all positive and negative currents can cancel each other.
The average value of square of the current cannot be zero because after squaring the currents all becomes positive and cannot cancel each other.
Average power dissipation and phase difference between voltage and current cannot be zero.
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2
Answer:
frequency
f=w/2π
f= 520/2*3.14
f= 82.76
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