27. Resistors & DC Circuits
Power in Circuits
8:19 minutes
Problem 26.85
Textbook Question
Textbook QuestionA flashlight bulb rated at 2.0 W and 3.0 V is operated by a 9.0-V battery. To light the bulb at its rated voltage and power, a resistor R is connected in series as shown in Fig. 26–81. What value should the resistor have?
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