: Electricity
Page 1 of 6
DO NOT WRITE ON THIS TEST!!! Answer the question on another sheet of paper.
Equations:
C = Q/V
C = εoA/d
PEe = ÓQV = ÓCV2
I = Q/t
R = V/I
P = IV = I2R = V2/R
RT = R1 + R2 + …
RT = (R1-1 + R2-1 +…)
1.
Which of the following is NOT a characteristic of electrical potential energy?
a) It is a form of mechanical energy.
b) It results from a single charge.
c) It results from the interaction between the charges of two objects.
d) It is associated with a charge in a uniform field.
2.
A capacitor consists of two metal plates; ____________________ is stored on one plate, and
____________________ is stored on the other.
a) negative charge; positive charge
b) potential energy; kinetic energy
c) potential difference; internal resistance
d) residual charge; induced charge
3.
Increasing the separation of the two charged parallel plates of a capacitor that are
disconnected from a battery will produce what effect on the capacitor?
a) It will increase the charge.
b) It will decrease the charge.
c) It will increase the capacitance.
d) It will decrease the capacitance.
4.
Increasing the potential difference across the two plates of a capacitor will produce what
effect on the capacitor?
a) It will increase charge.
b) It will decrease charge.
c) It will increase the capacitance.
d) It will decrease the capacitance.
5.
A 0.25 µF capacitor is connected to a 9.0 V battery. What is the charge on the capacitor?
a) 1.2 x10-12 C
b) 2.2 x10-6 C
c) 2.8 x10-8 C
d) 3.6 x10-7 C
6.
A parallel-plate capacitor has a capacitance of C F. If the area of the plates is doubled while
the distance between the plates is halved, the new capacitance will be
a) 2 C.
b) 4 C.
c) C/2.
d) C/4
: Electricity
Page 2 of 6
7.
What is the capacitance of a parallel-plate capacitor made of