A capacitor is charged to a potential of 120 v and is then, Ask an Expert

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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 3.50M%u03A9 . After a time of 3.90s the voltmeter reads 3.0V .

A) What is the capacitance?

B) What is the time constant of the circuit?

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