Solved: A flashlight bulb rated at 2.0 W and 3.0 V is

Chapter 19, Problem 87GP

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A flashlight bulb rated at \(2.0 \mathrm{~W}\) 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. 19–85. What value should the resistor have?

\(9.0 \mathrm{~V}\)

Equation transcription:

Text transcription:

2.0{~W}

3.0 V

9.0-V

9.0{~V}