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# Electric field and Potential: Parallel plate capacitor.

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Part 1

Consider the Earth and a cloud layer 760 m above the Earth to be the plates of a parallel-plate capacitor. If the cloud layer has an area of 1.03 km2 = 1.03E+6 m2, what is the capacitance?

Part 2

If an electric field strength greater than 4.29E+6 N/C causes the air to break down and conduct charge (lightning), what is the maximum charge the cloud can hold?

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#### Solution Preview

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Consider the Earth and a cloud layer 760 m above the Earth to be the plates of a parallel-plate capacitor. If the cloud layer has an area of 1.03 km2 = 1.03E+6 m2, what is the capacitance?
The capacitance of a parallel plate capacitor is given by

Here A is the area of the capacitor plates equal to 1.03*106 ...

#### Solution Summary

Problem related to parallel plate capacitor is solved and explained.

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