Questions
An alternating voltage volt is applied across a capacitor. Then average electrostatic energy stored in it is
detailed solution
Correct option is D
QC=V⇒Q100×10−6=100cos100πt⇒Q=10−2cos100πt coulomb∴ Qrms=10−22 coulomb∴ U=Qrms2/2C=(10−22)2×12×10−4J=0.25 JTalk to our academic expert!
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A large metallic plate is facing a charged sheet having charge density placed parallel to plate at a distance l from the plate. Potential at point P at a distance x from the sheet is
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