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What is the dielectric strength of water? Can water be used as dielectric medium? Name such capacitors & its applications?

Asked by Manjeet Dhiman 23rd December 2011, 12:00 AM
Answered by Expert
Dielectric strength of water is near about 65-70. Deionised water is used as the dielectric medium.
A dielectric capacitor consists of two metal sheets placed on either side of a layer of dielectric material. Dielectrics are materials like glass or plastics (polymers) which are insulators. The behaviour of a dielectric is determined by its dielectric constant value.
A good application is computer memory,
Another application is a flash bulb for a camera, which requires a lot of charge to be transferred in a short time. Batteries are good at providing a small amount of charge for a long time, so charge is transferred slowly from a battery to a capacitor. The capacitor is discharged quickly through a flash bulb, lighting the bulb brightly for a short time.
Answered by Expert 23rd December 2011, 9:16 AM
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