Talk:Introduction to Electronics/Lecture Schematics

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I do not totally understand the section on resisters. To provide the labeled wattage dissipation for the specified 150K Ohms are you assuming a standard voltage input to the resistor to a standard ground. In others words is the voltage across the resister somehow known and is this a common assumption that must be known when reading most schematics? Mirwin 04:07, 20 December 2007 (UTC)