![A 56-W lamp is placed in series with a resistor and a 120-V source. If the voltage across the lamp is 30 V, what is the resistance R of the resistor? A 56-W lamp is placed in series with a resistor and a 120-V source. If the voltage across the lamp is 30 V, what is the resistance R of the resistor?](https://homework.study.com/cimages/videopreview/videopreview-full/1o3owh16nr.jpg)
A 56-W lamp is placed in series with a resistor and a 120-V source. If the voltage across the lamp is 30 V, what is the resistance R of the resistor?
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