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Question

A metal wire is bent information circle of radius 10cm. It is given a charge of 200 x 10-6 C which spreads uniformly . Calculate the potential at its centre 


Solution

The potential at the center of the circular wire is simply,

V = kq/r

Where,

k = 9 × 10^9 Nm2/C2

q = 200 × 10^-6 C

r = 10 cm = 0.1 m

Therefore, V = (9 × 10^9)( 200 × 10^-6)/(0.1) = 1.8 × 10^7 V
 


Physics

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