Physics Concepts Chapter 20
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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 B, C B A, B A, B, C
A,B, C
Which one of the following graphs correctly represents Ohm's law, where V is the voltage and I is the current? B C D A
C
