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Zener Diode

Under what co...

Question

Under what condition is (i) no power dissipated even though the current flows through the circuit, (ii) maximum power dissipated in the circuit?
With required equations

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Solution

$P o w e r d i s s i p a t e d i n t h e L C R c i r c u i t i s g i v e n b y : P = V_{r m s} I r m s \cos ϕ w h e n ϕ i s t h e p a h s e a n g l e b e t w e e n c u r r e n t a n d v o l t a g e w h e n ϕ = \frac{π}{2} t h e n p o w e r = 0 e v e n w h e n c u r r e n t f l o w s t h r o u g h t h e c i r c u i t . M A x i m u m p o w e r i s d i s s i p a t e d w h e n i m p e d a n c e o f f e r e d b y t h e c i r c u i t i s e q u a l t o t h e r e s i s \tan c e . Z = R i . e . r e a c \tan c e p r a v i d e d b y c a p a c i t o r = r e a c \tan c e p r o v i d e d b y i n d u c t o r$

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