The timing device in an automobiles intermittient wiper, Ask an Expert

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The timing device in an automobile's intermittient wiper system is based on an RC time constanst and utilizes a .200uF capacitior and a variable resistor. over what range must R be made to vary to achive time constants from 9 to 20 S.

R_low= ______ in Ω
R_high= _____ in Ω

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