Discussion
Assertion (A): Assertion: A bridge rectifier needs diodes of lower voltage rating than a centre-tapped full-wave rectifier for the same output.
Reason (R): Reason: In a bridge the reverse voltage is shared between two non-conducting diodes.
Select the correct answer from the options below.
Answer: D
Both are true and the second explains the first: the bridge's idle diodes share the reverse voltage, so each sees only the secondary peak, while the centre-tapped circuit's idle diode sees twice the half-winding peak. That is the bridge's real advantage, alongside needing no centre tap, and it outweighs the extra two devices. Counting components is a poor guide to cost when the ratings differ.
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