Question

A thin, horizontal, 20-cm-diameter copper plate is charged to -4.4 nC . Assume that the electrons...

A thin, horizontal, 20-cm-diameter copper plate is charged to -4.4 nC . Assume that the electrons are uniformly distributed on the surface

What is the strength of the electric field 0.1 mm above the center of the top surface of the plate?

What is the strength of the electric field at the plate's center of mass?

What is the strength of the electric field 0.1 mm below the center of the bottom surface of the plate?

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Answer #1

Electric field strength at the center of mass = 0

Because Qnet at COM = 0

2 九r2 (b) Sne the nef charge at thecenter ef mosss eual to 2 ens ths clechric freld at centerot mess must be epual to 2ero 2 2 -12 22.

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