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What is the time range covered by the variable resistor

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Reference no: EM131128188

Figure 7.138 shows a circuit for setting the length of time voltage is applied to the electrodes of a welding machine. The time is taken as how long it takes the capacitor to charge from 0 to 8 V. What is the time range covered by the variable resistor?

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Reference no: EM131128188

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