If R = 40 KΩ, C = 3

Multiple Choice

If R = 4.0 kΩ, C = 3.0 mF, ε = 15 V, Q = 12 mC, and I = 2.0 mA, what is the potential difference V_b − V_a?

A) +3.0 V
B) −19 V
C) −3.0 V
D) +27 V
E) +21 V