1.

A parallel plate capacitor of capacitance 100 mu F Is charged to 500 V. The plate separation is then reduce to half its original value. Then the potential on the capacitor becomes

Answer»

250 V
500 V
1000 V
2000 V

Solution :Here, ` "" C.= 2C`, since the charge REMAINS the same ,
`q = C.V. = CV RARR V. = (CV)/(2C) = (500)/(2) = 250 `C


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