Chapter 19  Sample Multiple Choice Problems

1.       Three identical resistors are connected in series to a battery.  If the current of 12 A flows from the battery, how much current flows through any one of the resistors?

a.   12 A

b.   4 A

c.   36 A

d.   zero

2.       Three identical resistors are connected in parallel to a battery.  If the current of 12 A flows from the battery, how much current flows through any one of the resistors?

a.   12 A

b.   4 A

c.   36 A

d.   zero

3.       Three identical resistors are connected in series to a 12-V battery.  What is the voltage across any one of the resistors?

a.   36 V

b.   12 V

c.   4 V

d.   zero

4.       Three identical resistors are connected in parallel to a 12-V battery.

What is the voltage of any one of the resistors?

a.   36 V

b.   12 V

c.   4 V

d.   zero

5.       A 6.0-Ω and a 12-Ω resistor are connected in series to a 36-V battery.

What power is dissipated by the 6.0-Ω resistor?

a.   24 W

b.   48 W

c.   12 W

d.   6.0 W

6.       A 6.0-Ω and a 12-Ω resistor are connected in parallel to a 36-V battery.  What power is dissipated by the 6.0-Ω resistor?

a.   0.22 kW

b.   48 W

c.   0.49 kW

d.   24 W

7.       As more resistors are added in series to a constant voltage source, the power supplied by the source

a.   increases.

b.   decreases.

c.   does not change.

d.   increases for a time and then starts to decrease.

8.       As more resistors are added in parallel to a constant voltage source, the power supplied by the source

a.   increases.

b.   decreases.

c.   does not change.

d.   increases for a time and then starts to decrease.

9.       A combination of 2.0 Ω in series with 4.0 Ω is connected in parallel with 3.0 Ω.  What is the equivalent resistance?

a.   2.0 Ω

b.   3.0 Ω

c.   4.0 Ω

d.   9.0 Ω

10.     Three resistors of 12, 12, and 6.0 Ω are connected in parallel.  A 12-V battery is connected to the combination.  What is the current through the 6.0-Ω resistor?

a.   1.0 A

b.   2.0 A

c.   3.0 A

d.   4.0 A

11.     Capacitances of 10 μF and 20 μF are connected in parallel, and this pair is then connected in series with a 30 μF capacitor.  What is the equivalent capacitance of this arrangement?

a.   10 μF

b.   15 μF

c.   25 μF

d.   60 μF

12.     Three identical capacitors are connected in parallel to a battery.  If a total charge of Q flows from the battery, how much charge does each capacitor carry?

a.   3Q

b.   Q

c.   Q/3

d.   Q/9

13.     Four 16 μF capacitors are connected in series.  The equivalent capacitance of this combination is

a.   64 μF

b.   16 μF

c.   4.0 μF

d.   2.0 μF

14.     Four 16 μF capacitors are connected in parallel.  The equivalent capacitance of this combination is

a.   64 μF

b.   16 μF

c.   4.0 μF

d.   2.0 μF

15.     5.00 μF, 10.0 μF, and 50.0 μF capacitors are connected in series across a 12.0 V battery.  How much charge is stored in the 5.00 μF capacitor?

a.   12.5 μC

b.   25.0 μC

c.   37.5 μC

d.   50.0 μC

1.      a

2.       b

3.       c

4.       b

5.       a

6.       a

7.       b

8.       a

9.       a

10.     b

11.     b

12.     c

13.     c

14.     a

15.     c