A single resistor is connected across the terminals of a
Chapter 20, Problem 20.55(choose chapter or problem)
A single resistor is connected across the terminals of a battery. Which one or more of the following changes in voltage and current leaves unchanged the electric power dissipated in the resistor? (A) Doubling the voltage and reducing the current by a factor of two (B) Doubling the voltage and increasing the resistance by a factor of four (C) Doubling the current and reducing the resistance by a factor of four (a) A, B, C (b) A, B (c) B, C (d) A (e) B
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