A low resistance LDR of 20Ω, operated at a certain intensity of light – McqOptions

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1.	A low resistance LDR of 20Ω, operated at a certain intensity of light, is to be protected through a series resistance in such a way that up to 12 mA of current is to flow at a supply voltage of 10 V. What is the nearest value of the protective resistance?
A.	873 Ω
B.	813 Ω
C.	273 Ω
D.	81 Ω
Answer» C. 273 Ω

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A low resistance LDR of 20Ω, operated at a certain intensity of light, is to be protected through a series resistance in such a way that up to 12 mA of current is to flow at a supply voltage of 10 V. What is the nearest value of the protective resistance?