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The area of each plate of a parallel pla...

The area of each plate of a parallel plate glass capacitor is `314 cm^2`. Its plates are separated by a distance 1 cm. What will be the radius of a sphere having a capacitance equal to that of this capacitor ? [k of glass=8]

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Capacitance of the sphere,
`C= (k alpha)/(4 pi d)= (8xx314)/(4xxpixx1) approx 200` statF
So, radius of the sphere = 200 cm.
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