JEE Main · 2021 · 31 Aug 2021 · Shift 1 · Semiconductors

Choose the correct waveform that can represent the voltage across

R

of the following circuit, assuming the diode is ideal one :

(A)(see structure)
✓ Correct
(B)(see structure)
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

In the given circuit, the diode is ideal and connected in series with the resistor R. When the input AC voltage is positive, the diode is forward-biased and conducts, allowing current to flow through R. The voltage across R follows the positive half-cycle of the input. When the input is negative, the diode is reverse-biased and blocks current, so the voltage across R is zero. This produces a half-wave rectified output, which is shown in option (A).

JEE Main · 2021 · 31 Aug 2021 · Shift 1 · Single correct option

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