An Air-Filled Parallel-Plate Capacitor Is Constructed with a Plate Area $0.40 \mathrm {~m} ^ { 2 }$

question 37

Short Answer

An air-filled parallel-plate capacitor is constructed with a plate area of $0.40 \mathrm {~m} ^ { 2 }$ and a plate separation of $0.10 \mathrm {~mm}$ . It is then charged to a potential difference of $12 \mathrm {~V}$ ? $\left( \varepsilon _ { 0 } = 8.85 \times \right.$ $10 ^ { - 12 } \mathrm { C } ^ { 2 } / \mathrm { N } \cdot \mathrm { m } ^ { 2 }$ )
(a) How much charge is stored on each of its plates?
(b) How much energy is stored in it?

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