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Shane Macguire Grade: upto college level
`        An air-filled parallel-plate capacitor is to be constructed which can store 12 μC of charge when operated at 1200 V. What can be the minimum plate area of the capacitor? The dielectric strength of air is 3 × 10^6 V/m.`
3 years ago

## Answers : (1)

Jitender Pal
365 Points
```										Sol. Q = 12 μc
V = 1200 V
v/d = 3 * ^10-6 v/m
d = v/(v/d) = 1200/3 * 10^-6 = 4 * 10^-4 m
c = Q/v = 12 * 10^-6/1200 = 10^-8 f
∴ C = ε base 0A/d = 10^-8 f
⇒ A = 10^-8 * d/ε base 0 = 10^-8 *4 * 10^-4/8.854 * 10^-4 0.45m^2

```
3 years ago
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