Q. The silicon controlled rectifier consists of four layers (P-N-P-N) with _ P-N junctions that are connected in series.
Solution:
Unlike two layers (P-N) in the diode and three layers (P-N-P or N-P-N) in transistors, the silicon controlled rectifier consists of four layers (P-N-P-N) with three P-N junctions that are connected in series.
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