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- A charge ±Q is placed on the plates of a capacitor, which is then disconnected from the outside world. The separation between the plates is changed, and it is found that the voltage across the plates decreases. (a) Have the plates been moved closer together or farther apart? O closer together O farther apart (b) If the new voltage is smaller than the original voltage by a factor of six, what is the ratio of the new plate spacing to the original spacing?A parallel-plate capacitor with plate separation d is connected to a battery that has potential difference AVbat. Without breaking any of the connections, insulating handles are used to increase the plate separation to 2d.Explain why the potential is uniform inside the ring of the shielding material and hence how the shielding material works.
- ranA What is he potental aeence betueen ponts aand b The fgure shows ho untmy charged spheres Egue Express your answer to teo significant figures and include the appropriate unita. av. 89000 V Submit ateams festes Figure X Incorrect, Ty Again; 3 attempts remaining Part 00 100 Which pontis atthe hgher potenta Hine The potental at any pontis the superpestion of the potentials due to at charges O Ponta O Pent Submit Reuest AneerConsider a thin, uniformly charged rod of length L with total charge Q and test points A, a distance a from the center of the rod and B a distance b from the rod. В Find the potential difference between A and B first by integrating the point source potential to find V and V and subtracting, and then by integrating the field. Compare the results in the limit of L>>(a and b). To test the far field limit, compare the appropriate result to the case where L is much less than both a and b. You may need to do this one numerically.How do you do this one? Specifically, for b), the answer gives Vb > Va, why is that? In general how do we know which side has higher potentials? (notice: this is not a graded question, it's a practice problem that comes with an answer which I don't quite understand, you can see from how I asked the question that the answer is provided...)