Question

1- A 10.0-W resistor and a 20.0-W resistor are connected in
series with a potentiometer and a 9.0-V battery.

What should the potentiometer be set at for a total equivalent
resistance of 50.0 W in this circuit?

a. 10 Ω

b. 20 Ω

c. 30 Ω

d. 50 Ω

2-Batteries are most often connected in

a. series.

b. parallel.

c. both series and parallel.

d. neither series nor parallel.

(i think parallel)

3- A 9.0-V battery delivers a 1.3-A current to an electric motor. How much power is delivered to the motor?

a. 8.2 W

b. 9.9 W

c. 11 W

d. 12W

4-While many properties are similar, one important difference between electrostatic and gravitational forces is that unlike gravity, electric charge

a. can be transferred.

b. operates at a distance.

c. obeys an inverse-square law.

d. remains constant over time.

5- Using known values of E and B, Thomson measured the deflection of the electron beam and was able to calculate the ___________ of an electron.

a. force

b. strength

c. mass

d. path

6-A wire 15 m long moves through a magnetic field of 1.0 T. The wire moves at a constant speed of 5.7 m/s in a direction perpendicular to the magnetic field. What EMF is induced in the wire?

a. 2.6 V

b. 86 V

c. 43 V

d. 61 V

7-The magnitude of the current in a wire is _________ to the magnetic field around the wire.

a. equal

b. proportional

c. inversely proportional

d. parallel

Answer #1

A 56.0-Ω resistor is connected in parallel with a 118.0-Ω
resistor. This parallel group is connected in series with a 15.0-Ω
resistor. The total combination is connected across a 15.0-V
battery. (a) Find the current in the 118.0-Ω
resistor.
(b) Find the power dissipated in the 118.0-Ω resistor.
W

A 62.0-Ω resistor is connected in parallel with a 117.0-Ω
resistor. This parallel group is connected in series with a
16.0-Ωresistor. The total combination is connected across a 15.0-V
battery.
(a) Find the current in the 117.0-Ω resistor.
A
(b) Find the power dissipated in the 117.0-Ω resistor.
W

Three resistors connected in parallel have individual values of
4.0, 6.0, and 10.0 Ω, respectively. If this combination is
connected in series with a 12-V battery and a 2.0- Ω resistor, what
is the current in the 10.0- Ω resistor?
a.
11 A
b.
16 A
c.
1.0 A
d.
0.55 A
If ε = 9.0 V, what is the current in the 15- Ω
resistor?a.
0.26 A
b.
0.20 A
c.
0.30 A
d.
0.10 A

67.5-Ω resistor is connected in parallel with a 167.0-Ω
resistor. This parallel group is connected in series with a 27.5-Ω
resistor. The total combination is connected across a 12.2-V
battery. Find (a) the current and (b) the power dissipated in the
167.0-Ω resistor

A 10.7-V battery, a 4.91-Ω resistor, and a 10.7-H inductor are
connected in series. After the current in the circuit has reached
its maximum value, calculate the following. (a) the power being
supplied by the battery (b) the power being delivered to the
resistor (c) the power being delivered to the inductor (d) the
energy stored in the magnetic field of the inductor

Chapter 18, Problem 1
A 47- resistor and a 29- resistor are connected in series across
a 24-V battery. What is the voltage across (a) the
47- resistor and (b) the 29- resistor?
Chapter 18, Problem 2
The current in a 63- resistor is 0.077 A. This resistor is in
series with a 42- resistor, and the series combination is connected
across a battery. What is the battery voltage?
Chapter 18, Problem 3
What resistance must be placed in parallel...

A 11.0-V battery, a 5.08-Ω resistor, and a 10.2-H inductor are
connected in series. After the current in the circuit has reached
its maximum value, calculate the following.
(a) the power being supplied by the battery
_______W
(b) the power being delivered to the resistor
_______W
(c) the power being delivered to the inductor
_______W
(d) the energy stored in the magnetic field of the inductor
_______J

Chapter 20, Problem 062
A 84.0-Ω resistor is connected in parallel with a 179.6-Ω
resistor. This parallel group is connected in series with a 25.3-Ω
resistor. The total combination is connected across a 21.2-V
battery. Find (a) the current and
(b) the power dissipated in the 179.6-Ω
resistor.
(a)
Number
_____
Units
_____
(b)
Number
________ Units ______

1.
A) A 13-Ω coffee maker and a 16-Ω frying pan are connected in
series across a 120-V source of voltage. A 25 Ω bread maker is also
connected across the 120-V source and is in parallel with the
series combination. Find the total current supplied by the source
of voltage.
B) A new "D" battery has an emf of 1.5 V. When a wire of
negligible resistance is connected between the terminals of the
battery, a current of 25...

A 3.0 resistor, an 6.0 resistor, and a 15 resistor are connected
in series with a 29 V battery.
(a) What is the equivalent resistance?
_______
(b) What are the currents in each resistor?
_______A (3.0 resistor)
_______ A (6.0 resistor)
_______ A (15 resistor)
(c) Repeat for the case in which all three resistors are
connected in parallel across the battery.
_______ (equivalent resistance)
_______A (3.0 resistor)
_______A (6.0 resistor)
_______ A (15 resistor)

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