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A parallel-plate capacitor has a capacitance of 140 pF, a plate area of 125 cm2, and...

A parallel-plate capacitor has a capacitance of 140 pF, a plate area of 125 cm2, and a mica dielectric (κ = 5.4). At 55 V potential difference, calculate the following values.

(a) E in the mica

???V/m

(b) the magnitude of the free charge on the plates

???C

(c) the magnitude of the induced surface charge on the mica

???C

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