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Physics · PYQ NEET UG 2025
हिन्दीA full wave rectifier circuit with diodes \( (D_1) \) and \( (D_2) \) is shown in the figure. If input supply voltage \( V_{\text{in}} = 220 \sin(100\pi t) \) volt, then at \( t = 15\text{ msec} \)
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Correct answer · Option D
\( D_1 \) and \( D_2 \) both are reverse biased
Explanation
At \( t = 15 \times 10^{-3}\text{ s} \), \( V_{\text{in}} = 220 \sin(100\pi \times 15 \times 10^{-3}) = 220 \sin(1.5\pi) = -220\text{ V} \). Thus the transformer secondary terminals are negative, making both diodes reverse biased.
