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Power dissipated in the component, P = V²/R, so for constant voltage, power goes up as resistance goes down.
and/or splain this:
Lamp -- power cord: relatively thick, mostly cool
-- light bulb filament: relatively thin, seriously hot...
isn't the filament the part of that circuit with highest

Yup, filament is the highest resistance in the circuit. Since all the components are in series, the current through each piece is the same. When the current is fixed, the <p>power deposited in each piece is proportional to its resistance. (P = I²R) Therefore, the cord stays cool and the filament gets hot enough to glow. (We'd be really upset if it were the other way around.)


no.... but i'm maybe closer to seeing why i'm confused...
seems in one case Voltage is constant, and in the other case, somehow

but ? if V = I*R...... if R increases, no way Voltage and Current Both constant ?

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