An LRC circuit is at critical damping with R = 100 ?. Starting from its maximum value, the charge on the capacitor drops to 50% of its value in a time t = 5 ms. What are the values of the inductance L and the capacitance C?
A)
L = 0.36 H, C = 0.144 mF
B)
L = 2.67 H, C = 1. 25 mF
C)
L = 0.03 H, C = 0. 3 mF
D)
L = 1.17 H, C = 8.1 mF
E)
L = 5.12 H, C = 0. 06 mF
A
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If R = 3.0 k?, C = 5.0 mF, ? = 6.0 V, Q = 15 mC, and I = 4.0 mA, what is the potential difference Vb ? Va?
a.
?3.0 V
b.
+9.0 V
c.
?15 V
d.
+21 V
e.
?6.0 V