1. If a capacitor has a capacitance of 10.2 uF and we wish to lower the potential
difference across the plates by 60.0 V, how much charge will we have to remove?
(A) 10.2 11C (B) 612 C (C) 10.2 c (D) 0.17 uC (E) 612 pc
ﬂ. Consider the assembly of capacito
8. Three identical resistors, R1, R2, and R3, are wired together as shown in the ﬁgure. An
electric current is ﬂowing through the three resistors. The current ﬂowing through R2
R1 Rn R3
gig? is the same as the current through R1 and R3.
is a third of th
14. To discharge a capacitor in an RC circuit very quickly, what should the values of the
resistance and the capacitance be?
(K) Both should be as large as possible.
(B) Resistance should be as large as possible, and capacitance as small as possible.
4. What is the magnitude of the electric ﬁeld at the point (3.0i — 23' + 4k) m if the electric
potential is given by V= 2.00 xzyz, where Vis in volts and x, y, and z are in meters?
A. 125.3 Wm
B. 150 V/m
C. 175.5 V/m
B. 225.5 V/m
5. If the
11. In the given circuit, what is the equivalent resistance between points A and B?
R1=24Q A W
1 .L +L¥
(A) 549 (B) 12 Q @312 9 (D) 5.5 Q (E) 18 Q
12. In an ionic solution, sodium ions (positively charged) are moving to the right and
19. For the junction shown in the ﬁgure, which equation correctly expresses the sum of
20. An uncharged capacitor with C = 14.9 uF, a resistor with R = 24.3 k9