why does the heater having low resistance get heated more _?
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If you use a very small resistance AND the circuit design is such that the voltage drop is across the resistance of the heating-wire-circuit, [nothing else in the circuit is limiting current flow] you will get more heating. That's what we have in a heat anticipator internal-nichrome-wire-heater device.
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why does the heater having low resistance get heated more _?
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When current flows through conductor, heat energy is generated in the conducter. ...The resistance, R of the conductor. A higher resistance produces more heat.
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