n order to measure the capacitance of a capacitor a physicist connects it to an oscillating source of emf of amplitude 4.0 x 10-3 V and of frequency f = 318.3 s-1.  She finds that the maximum instantaneous current in the capacitor is 8.0 x 10-9 A.  What is the capacitance?  (Hint:  You need to find the reactance first.)

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