What is the time constant of circuit-what is the capacitance

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A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.30M.  After a time of 3.90s the voltmeter reads 3.2V. What is the capacitance? What is the time constant of the circuit?

Reference no: EM13681846

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