Potential divider circuits PRACTICE: A light-dependent resistor (LDR) has R = 25 in bright light and...
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Potential divider circuits PRACTICE: A light-dependent resistor (LDR) has R = 25 in bright light and R = 22000 2 in low light. An electronic switch will turn on a light when its p.d. is above 7.0 V. What should the value of R be? 9.0 V R R N electronic switch Potential divider circuits PRACTICE: A light-dependent resistor (LDR) has R = 25 in bright light and R = 22000 2 in low light. An electronic switch will turn on a light when its p.d. is above 7.0 V. What should the value of R be? 9.0 V R R N electronic switch
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