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Double the Resistance
Electricity & Magnetism / Electric Power - 4 min
An ideal ohmic resistor is connected to a fixed voltage source. Its resistance is doubled while the voltage across it remains exactly the same and non-zero. What is the ratio of the new electrical power dissipated in the resistor to the old power?
Assumptions
Compare steady states of ideal ohmic resistors with positive resistance. The ideal source maintains the same non-zero voltage across the resistor; connecting wires have negligible resistance.
More Options for Double the Resistance
Collection question · Revision 1 · ID: fixed-voltage-power