Solving a problem in physics section 70 point 5 electr

Solving a problem in physics section 70 point 5 electr

5. A flat capacitor has between its plates a solid dielectric plate with a permittivity ε = 7, which completely fills the gap between them. The capacitance of the capacitor is equal to C = 100 pF. The capacitor is connected to a source with a voltage of U = 50 V. What work A must be done in order to slowly pull the dielectric plate out of the capacitor? There is no friction.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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