A photoresistor, whose resistance decreases with light intensity, is connected in the circuit of Figure P23.30. On a sunny day, the photoresistor has a resistance of \(0.56 \mathrm{k} \Omega\). On a cloudy day, the resistance rises to \(4.0 \mathrm{k} \Omega\). At night, the resistance is \(20 \mathrm{k} \Omega\)

a. What does the voltmeter read for each of these conditions?

b. Does the voltmeter reading increase or decrease as the light intensity increases?

Transcribed Image Text:

9.0 V Photoresistor ( FIGURE P23.30 1.0 k (www) ww V