1. Chapter 31

2. 1. Ra > Rc > Rb > Rd 2. Rb > Rd > Ra > Rc
Conductors a to d are all made of the same material. Rank in order, from largest to smallest, the resistances Ra to Rd.
1. Ra > Rc > Rb > Rd
2. Rb > Rd > Ra > Rc
3. Rc > Ra > Rd > Rb
4. Rc > Ra = Rd > Rb
5. Rd > Rb > Rc > Ra
STT31.1

3. 1. Ra > Rc > Rb > Rd 2. Rb > Rd > Ra > Rc
Conductors a to d are all made of the same material. Rank in order, from largest to smallest, the resistances Ra to Rd.
1. Ra > Rc > Rb > Rd
2. Rb > Rd > Ra > Rc
3. Rc > Ra > Rd > Rb
4. Rc > Ra = Rd > Rb
5. Rd > Rb > Rc > Ra
STT31.1

4. Which of these diagrams represent the same circuit?
1. a and b
2. a and c
3. b and c
4. a, b, and c
5. a, b, and d
STT31.2

5. Which of these diagrams represent the same circuit?
1. a and b
2. a and c
3. b and c
4. a, b, and c
5. a, b, and d
STT31.2

6. 1. ∆V increases by 2 V in the direction of I.
What is ∆V across the unspecified circuit element? Does the potential increase or decrease when traveling through this element in the direction assigned to I?
1. ∆V increases by 2 V in the direction of I.
2. ∆V decreases by 2 V in the direction of I.
3. ∆V increases by 10 V in the direction of I.
4. ∆V decreases by 10 V in the direction of I.
5. ∆V increases by 26 V in the direction of I.
STT31.3

7. 1. ∆V increases by 2 V in the direction of I.
What is ∆V across the unspecified circuit element? Does the potential increase or decrease when traveling through this element in the direction assigned to I?
1. ∆V increases by 2 V in the direction of I.
2. ∆V decreases by 2 V in the direction of I.
3. ∆V increases by 10 V in the direction of I.
4. ∆V decreases by 10 V in the direction of I.
5. ∆V increases by 26 V in the direction of I.
STT31.3

8. 4. Pb > Pc > Pa > Pd 5. Pb > Pd > Pa > Pc
Rank in order, from largest to smallest, the powers Pa to Pd dissipated in resistors a to d.
1. Pb > Pa = Pc = Pd
2. Pb = Pc > Pa > Pc
3. Pb = Pd > Pa > Pc
4. Pb > Pc > Pa > Pd
5. Pb > Pd > Pa > Pc
STT31.4

9. 4. Pb > Pc > Pa > Pd 5. Pb > Pd > Pa > Pc
Rank in order, from largest to smallest, the powers Pa to Pd dissipated in resistors a to d.
1. Pb > Pa = Pc = Pd
2. Pb = Pc > Pa > Pc
3. Pb = Pd > Pa > Pc
4. Pb > Pc > Pa > Pd
5. Pb > Pd > Pa > Pc
STT31.4

10. What is the potential at points a to e ?1. 2. 3. 4. 5.
STT31.5

11. What is the potential at points a to e ?1. 2. 3. 4. 5.
STT31.5

12. Rank in order, from brightest to dimmest, the identical bulbs A to D.
1. A = B = C = D
2. A > B > C = D
3. A > C > B > D
4. A > C = D > B
5. C = D > B > A
STT31.6

13. Rank in order, from brightest to dimmest, the identical bulbs A to D.
1. A = B = C = D
2. A > B > C = D
3. A > C > B > D
4. A > C = D > B
5. C = D > B > A
STT31.6

14. The time constant for the discharge of this capacitor is
5. The capacitor doesn’t discharge because the resistors cancel each other.
STT31.7

15. The time constant for the discharge of this capacitor is
5. The capacitor doesn’t discharge because the resistors cancel each other.
STT31.7

16. Chapter 31
Reading Quiz

17. How many laws are named after Kirchhoff?
1. 0
2. 1
3. 2
4. 3
5. 4
IG31.1

18. How many laws are named after Kirchhoff?
1. 0
2. 1
3. 2
4. 3
5. 4
IG31.1

19. 4. Effective capacitance 5. Inductive constant
What property of a real battery makes its potential difference slightly different than that of an ideal battery?
1. Short circuit
2. Chemical potential
3. Internal resistance
4. Effective capacitance
5. Inductive constant
IG31.2

20. 4. Effective capacitance 5. Inductive constant
What property of a real battery makes its potential difference slightly different than that of an ideal battery?
1. Short circuit
2. Chemical potential
3. Internal resistance
4. Effective capacitance
5. Inductive constant
IG31.2

21. In an RC circuit, what quantity is represented by the symbol
1. Period
2. Torque
3. Terminal voltage
4.Time constant
5. Coefficient of thermal expansion
IG31.3

22. In an RC circuit, what quantity is represented by the symbol
1. Period
2. Torque
3. Terminal voltage
4. Time constant
5. Coefficient of thermal expansion
IG31.3

23. Which of the following are ohmic materials:
1. Wires
2. Resistors
3. Light bulb filaments
4. All of the above
5. None of the above
IG31.4

24. Which of the following are ohmic materials:
1. Wires
2. Resistors
3. Light bulb filaments
4. All of the above
5. None of the above
IG31.4

25. The equivalent resistance for a group of parallel resistors is
1. less than any resistor in the group.
2. equal to the smallest resistance in the group.
3. equal to the average resistance of the group.
4. equal to the largest resistance in the group.
5. larger than any resistor in the group.
IG31.5

26. The equivalent resistance for a group of parallel resistors is
1. less than any resistor in the group.
2. equal to the smallest resistance in the group.
3. equal to the average resistance of the group.
4. equal to the largest resistance in the group.
5. larger than any resistor in the group.
IG31.5