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Compute all parts of given question:
Question: A parallel-plate capacitor is constructed from two 10 cm ? 10 cm electrodes spaced 1.0 mm apart. The capacitor plates are charged to ±9 nC, then disconnected from the battery.
Part A: How much energy is stored in the capacitor?
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Part B: Insulating handles are used to pull the capacitor plates apart until the spacing is 2.3 mm. Now how much energy is stored in the capacitor?
Part C: How much work was done in the process of pulling the plates apart?
I want help to find how much work was done in the process of pulling the plates apart.
An electric device draws 6.50 A at 240 V (a) if the voltage drops with 15% what will be the current assuming nothing else changing (b)if the resistance of device are reduced by 15 % what current would be drawn at 240 V
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