- #36
NascentOxygen
Staff Emeritus
Science Advisor
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Ah! Now you're asking the right question, FP.Femme_physics said:the inputs and outputs are not shown in this case...how can you tell whether it's a CE or not?
There are conventions in electronics, many of which you've been exposed to throughout your studies, whether you realize it or not. Inputs, by convention, are drawn to the left. Outputs to the right. The ground bus is horizontal and drawn lower down on the page than the [single] supply rail. Further, because the question asks about Common Emitter, you can infer that the schematic represents the bare bones of an amplifer. It is a "simplified" drawing because it doesn't show incidental detail such as bias arrangements, power supplies, and coupling. It shows just the basic topology, and that's all that is required to answer the question. Assuming this isn't a lightning arrestor, then something logical and obvious must be associated with what are pictorially shown as "free" ends of the resistors.
Perhaps this was a challenge question? Or maybe the aim was to ensure there'd be no further embarrassment to the examiner of someone scoring another 100%.
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