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A parallel plate capacitor is made out o...

A parallel plate capacitor is made out of two rectangular metal plates of sides 30 cm x 15 cm separated by a distance of 2 mm. The capacitor is charged in such a way that the charging current has a constant value of 100 mA. What must be the rate of change of potential of the charging source and what will be the displacement current in the region between the capacitor plates?

Text Solution

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`5xx10^8V.s^(-1),0.1A`
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A capacitor is made of two circular plates each of radius 12 cm, and separated by 5.0 cm. The capacitor is being charged by an external source. The charging current is constant and equal to 0.15 A. (a) Calculate the capacitance and rate of change of potential difference between the plates.

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Knowledge Check

  • A parallel plate capacitor is made of two circular plates separated by a distance of 5mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3xx10^(4) V/m , the charge density of the positive plate will be close to

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    B
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    C
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    D
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    Figure 8.6 shows a capacitor made of two circular plates each of radius 12 cm, and separated by 5.0 cm. The capacitor is being charged by an external source (not shown in the figure). The charging current is constant and equal to 0.15A. (a) Calculate the capacitance and the rate of change of potential difference between the plates. (b) Obtain the displacement current across the plates. (c) Is Kirchhoff’s first rule (junction rule) valid at each plate of the capacitor? Explain.

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