20. A photoresistor, whose resistance decrease with light intensity is connected in the circuit of the figure below. On a sunny day, the photoresistor has a resistance of 0.56 k. On a cloudy day, the resistance rises to 4.0 k. At night, the resistance is 20 kn. 9.0 V 7 Photoresistor 1.0 ΚΩ ww (i) What does the voltmeter read for each of these conditions? (ii) Does the voltmeter reading on the 1 k resistor increase or decrease as the light intensity increases on the photoresistor? Why?

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.