Problem $26\mathrm{.}45$

In the figure, the total resistance is $17\mathrm{.}4k,$ and the battery's emf is $30\mathrm{.}0$ V $.$ If the time constant is measured to be $26\mathrm{.}2s.$

$($Figure $1)$

Figure

$1$ of $1$

Part A

Calculate the total capacitance of the circuit.

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Part B

Calculate the time it takes for the voltage across the resistor to reach $16\mathrm{.}8$ V after the switch is closed.

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