Phys 165 Module 8 Exam Questions
With Complete Solutions
What is the relationship between the cross-sectional area of a wire and its resistance?
CORRECT ANSWERS Inverse Propotion
True or False: Direct current reverses direction at regular intervals. CORRECT
ANSWERS False
The *electrons* will move in a *counterclockwise* path around the circuit and *only one
direction* inside of the wire.
Positive to Negative
For a collection of resistors that are connected in *series,* which of the following
statements is *true?* Assume that the resistance of each resistor is different.
a) The current through each resistor is the same
b) The equivalent resistance is equal to the sum of the individual resistances
c) The total voltage across the circuit is equal to the sum of the individual voltages
d) All of the above are true CORRECT ANSWERS a) The current through each resistor
is the same
b) The equivalent resistance is equal to the sum of the individual resistances
c) The total voltage across the circuit is equal to the sum of the individual voltages
*d) All of the above are true*
True or False: Kirchhoff's *Loop* Rule states that the sum of the potential differences
around any closed loop in an electric circuit is always greater than the current in the
circuit. CORRECT ANSWERS False. Kirchhoff's *Loop Rule* states that the *sum of the
electric potential differences* (voltages) around any *closed loop is zero.*
For a collection of resistors that are connected in *parallel*, which of the following
statements is true? Assume that the resistance of each resistor is different.
A) The sum of the current through each resistor is equal to the total current of the
circuit.
B) The equivalent resistance is equal to the sum of the individual resistances.
C) The total voltage of the circuit is equal to the sum of the voltages across each
resistor.
D) A, B, and C are true. CORRECT ANSWERS A) The sum of the current through each
resistor is equal to the total current of the circuit.
current - changes
voltage- same
more branches =
With Complete Solutions
What is the relationship between the cross-sectional area of a wire and its resistance?
CORRECT ANSWERS Inverse Propotion
True or False: Direct current reverses direction at regular intervals. CORRECT
ANSWERS False
The *electrons* will move in a *counterclockwise* path around the circuit and *only one
direction* inside of the wire.
Positive to Negative
For a collection of resistors that are connected in *series,* which of the following
statements is *true?* Assume that the resistance of each resistor is different.
a) The current through each resistor is the same
b) The equivalent resistance is equal to the sum of the individual resistances
c) The total voltage across the circuit is equal to the sum of the individual voltages
d) All of the above are true CORRECT ANSWERS a) The current through each resistor
is the same
b) The equivalent resistance is equal to the sum of the individual resistances
c) The total voltage across the circuit is equal to the sum of the individual voltages
*d) All of the above are true*
True or False: Kirchhoff's *Loop* Rule states that the sum of the potential differences
around any closed loop in an electric circuit is always greater than the current in the
circuit. CORRECT ANSWERS False. Kirchhoff's *Loop Rule* states that the *sum of the
electric potential differences* (voltages) around any *closed loop is zero.*
For a collection of resistors that are connected in *parallel*, which of the following
statements is true? Assume that the resistance of each resistor is different.
A) The sum of the current through each resistor is equal to the total current of the
circuit.
B) The equivalent resistance is equal to the sum of the individual resistances.
C) The total voltage of the circuit is equal to the sum of the voltages across each
resistor.
D) A, B, and C are true. CORRECT ANSWERS A) The sum of the current through each
resistor is equal to the total current of the circuit.
current - changes
voltage- same
more branches =
