First slide

Rectifiers

Question

A 220 V A.C supply is connected between points A and B. What will be Potential Difference V across the capacitor

Moderate

A

220 V
B

110 V
C

0 V
D

$220 \sqrt{2} V$

Solution

$D u r i n g p o s i t i v e h a l f c y c l e, p - n j u n c t i o n c o n d u c t s a n d c a p a c i t o r i s c h a r g e d t o m a x i m u m (p e a k) v o l t a g e .$
$M a x P o t e n t i a l d i f f e r e n c e a c r o s s c a p a c i t o r = p e a k v o l t a g e = V_{0} = V_{r m s} \sqrt{2} = 220 \sqrt{2} V$

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