alleryStart learning →The lamp in a parallel circuit of two switches is off only when
Aboth switches are off
Bboth switches are on
Cjust switch S1 is on
Djust switch S2 is on
Answer & Solution
Correct answer: A. both switches are off
p ∨ q is 0 only when both p and q are 0.
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Related questions
In switching tests, the value 1 stands for a switch that isTwo switches wired side by side, in parallel, act likeTwo switches wired one after another, in series, act likeJoining any statement p with a tautology by 'or' always yieldsSimplify p ∨ (p ∧ q) using absorption:Rewriting 'p if and only if q' using implications givesRewriting an implication p → q using only ~ and ∨ givesWhich statement is logically equivalent to p → q?