40.An open circuit consists of a 12 µF parallel plate capacitor charged to 200 V and a 10 Ω resistor. At the instant when a switch closes the circuit (with no battery in it) the displacement current between the plates of the capacitor is
(A) 1.2 µA
(B)
(C) 2.4 mA
(D) 10 A
(E) 20 A
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統計: A(1), B(1), C(0), D(0), E(2) #3427040
統計: A(1), B(1), C(0), D(0), E(2) #3427040