MHT CET 2025 Physics question

Not in JEE Advanced syllabus

If an alternating voltage is applied across a p-n junction diode in series with a load then

(A)no voltage appears across load.
(B)a pulsating voltage appears across load.Correct
(C)an a.c. voltage appears across load.
(D)a d.c. voltage appears across load which is not pulsating.

Answer: (B)

Solution

A p-n junction diode conducts only when forward biased, i.e. during one half of each a.c. cycle, and blocks the current in the other half (reverse bias). The load therefore receives current in one direction only for half of each cycle, so the voltage across the load is a

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Question ID VK-102202