415 V, 50 Hz, 3-फेज आपूर्ति से जुड़े पूर्ण-तरंग दिष्टकारी (full-wave rectifier) की रिपल आवृत्ति (ripple frequency) क्या होती है?

Two ideal diodes are connected in parallel in the forward bias direction across a total circuit resistance of 4 Ω with an applied potential difference of 10 V, while a third identical diode in parallel is reverse biased. The total current I in the circuit is:

Determine the power dissipated (in mW) by the Zener diode if the source voltage VS = 16 V, RS = 1 kΩ, RL = 1.2 kΩ, and VZ = 10 V.