Two 14-cm-diameter electrodes 0.44 cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires...

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Physics

Two 14-cm-diameter electrodes 0.44 cm apart form aparallel-plate capacitor. The electrodes are attached by metalwires to the terminals of a 20 V battery.

A. What are the charge on each electrode, the electric fieldstrength inside the capacitor, and the potential difference betweenthe electrodes while the capacitor is attached to the battery? FindQ, E, and ∆V.

B. What are the charge on each electrode, the electric fieldstrength inside the capacitor, and the potential difference betweenthe electrodes after insulating handles are used to pull theelectrodes away from each other until they are 0.88 cm apart? Theelectrodes remain connected to the battery during this process.Find Q, E, and ∆V.

C. What are the charge on each electrode, the electric fieldstrength inside the capacitor, and the potential difference betweenthe electrodes after the original electrodes (not the modifiedelectrodes of part B) are expanded until they are28 cm in diameter while remaining connected to the battery? Find Q,E, and ∆V.

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