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Scientists are trying to model lightning in a lab using 2 large round metal plates. The...

Scientists are trying to model lightning in a lab using 2 large round metal plates. The plates are arranged one over the other with both plates parallel to the ground and parallel to each other. The top plate has a charge of -20 C. It is 1.3 m above the second plate which has an equivalent amount of positive charge on it. Each plate has an area of 2.4 m2 .

  1. What is the electric field between the plates?

  2. What is the electric potential difference between the plates?

  3. Sketch the plates, indicate the location and direction of the electric field, and the electric potential at each plate.

  4. What is the capacitance of the plates when there is no charge on them?

  5. What is the total energy stored in the capacitor when the top plate is charged to -20 C?

  6. What is the force (magnitude and direction) on a 10-gram ball with a charge of 9.2 nC when it is placed in the middle of the charged capacitor? Ignore gravity.

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