In general in an alternating current cir

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Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

In general in an alternating current circuit :

Options:

the average value of current is zero

the average value of square of the current is zero

average power dissipation is zero

the phase difference between voltage and current is zero

Correct Answer:

the average value of current is zero

Explanation:

Root mean squared current : I_rms = I_max/\(\sqrt { 2}\)
Average power : <P> = I²_max/R
The phase difference between the voltage and current depends upon the circuit elements.