PHYS 165 MODULE 8 EXAM
1. What is the relationship between the cross-sectional area of a wire and its
resistance?
Answer Inverse Propotion
2. True or False
Direct current reverses direction at regular intervals.
Answer False
The *electrons* will move in a *counterclockwise* path around the circuit and *only one direction* inside of the wire.
Positive to Negative
3. 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
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,voltages
d) All of the above are true
Answer 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*
4. 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.
Answer False. Kirchhott's *Loop Rule* states that the *sum of the electric potential ditterences*
(voltages) around any *closed loop is zero.*
5. 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
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, 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.
Answer A) The sum of the current through each resistor is equal to the total current of the circuit.
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1. What is the relationship between the cross-sectional area of a wire and its
resistance?
Answer Inverse Propotion
2. True or False
Direct current reverses direction at regular intervals.
Answer False
The *electrons* will move in a *counterclockwise* path around the circuit and *only one direction* inside of the wire.
Positive to Negative
3. 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
1/
17
,voltages
d) All of the above are true
Answer 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*
4. 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.
Answer False. Kirchhott's *Loop Rule* states that the *sum of the electric potential ditterences*
(voltages) around any *closed loop is zero.*
5. 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
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, 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.
Answer A) The sum of the current through each resistor is equal to the total current of the circuit.
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