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Introductory Physics Homework Help
Find the unknown capacity of two capacitors
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[QUOTE="epenguin, post: 6013001, member: 106258"] You have to be right about that what the question means. I guess I had resistance in accepting that because in that case that part of the question seemed so artificially contrived - testing examsmanship :devil: rather than physics understanding. Why would anyone [I]add[/I] those charges, to what physics, or what straightforward measurement would that correspond? The pair combines as one equivalent capacitance of 0.75 μF. More constructively at least this made me realize something I had never heard of or thought, nor had occasion to: that two capacitors In series cannot have more than a quarter of the capacitance as the same two in parallel (the ≤ becoming = when the two capacitances are equali. Likewise two resistors in parallel cannot have more than a quarter the resistance of the two in series, which I don't remember having particularly heard of. ) 1.5 is more than quarter of 4 so without needing to solve equations we should have been able to see immediately that the physically meaningful charge is not meant to be 1.5. [/QUOTE]
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Introductory Physics Homework Help
Find the unknown capacity of two capacitors
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