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WorksheetsSeries, parallel, power
Total questions: 18
Worksheet time: 29mins
The two ends of a 3.0-Wresistor are connected to a 9.0-V battery. What is the current through the resistor?
27 A
6.3 A
3.0 A
0.33 A
The two ends of a 3.0-Wresistor are connected to a 9.0-V battery. What is the total power delivered by the battery to the circuit?
3.0 W
27 W
0.33 W
0.11 W
Three 8.0-ohms resistors are connected in series. What is their equivalent resistance?
24.0 ohms
8.0 ohms
0.38 ohms
0.13 ohms
Three resistors connected in series each carry currents labeled I1,I2and I3. Which of the following expresses the value of the total current ITin the system made up of the three resistors in series?
IT= I1+ I2+ I3
IT= (1/I1+ 1/I2 + 1/I3)
IT= I1= I2= I3
IT= (1/I1+ 1/I2 + 1/I3)-1
Three resistors connected in series have individual voltages labeled V1, V2and V3, respectively. Which of the following expresses the value of the total voltage DVTtaken over the three resistors together?
VT= V1 + V2+ V3
VT= (1/V1+ 1/V2+ 1/V3)
VT= V1= V2 = V3
VT= (1/V1+ 1/V2+ 1/V3)-1
Three resistors with values of R1, R2and R3, respectively, are connected in series. Which of the following expresses the total resistance, RT, of the three resistors?
RT= R1+ R2+ R3
RT= (1/R1+ 1/R2+ 1/R3)
RT= R1= R2= R3
RT= (1/R1+ 1/R2 + 1/R3)-1
Three resistors, with values of 2.0, 4.0 and 8.0 ohms, respectively, are connected in series. What is the overall resistance of this combination?
0.58 ohms
1.1 ohms
7.0 ohms
14.0 ohms
Which resistor is in series with resistor R?
R1
R2
R3
R4
Three resistors, each with resistance R1, are in series in a circuit. They are replaced by one equivalent resistor, R. Comparing this resistor to the first resistor of the initial circuit, which of the following is true?
The current through R equals the current through R1.
The voltage across R equals the voltage across R1.
The power given off by R equals the power given off by R1.
R is less than R1.
If R1 < R2< R3,and if these resistors are connected in series in a circuit, which one dissipates the greatest power?
R1
R2
R3
all are equal
When a light bulb is turned on, its resistance increases until it reaches operating temperature. What happens to the current in the bulb as it is warming up?
It stays constant
It increases.
It decreases
It increases at first and then decreases.
Resistors of values 8.0 , 12.0 , and 24.0 ohms are connected in series across a battery with a small internal resistance. Which resistor dissipates the greatest power?
12 ohm
8 ohm
24 ohm
all dissipate equal power
Three 8.0- ohm resistors are connected in parallel. What is their equivalent resistance?
0.054 ohms
0.13 ohms
0.38 ohms
2.7 ohms
Three 4.0-ohm resistors are connected in parallel to a 12.0-V battery. What is the current in any one of the resistors?
16 A
9.0 A
3.0 A
48 A
Which two resistors are in parallel with each other?
R and R4
R2 and R3
R2 and R4
R and R1
Three resistors, each with resistance R1, are in parallel in a circuit. They are replaced by one equivalent resistor, R. Compare this resistor to the first resistor of the initial circuit. Which of the following statements is true?
The current through R equals the current through R1
The voltage across R equals the voltage across R1
The power given off by Requals the power given off by R1.
Ris greater than R1
Resistors of values 6.0W, 4.0W, 10.0 ohms and 7.0 ohm are combined as shown. What is the equivalent resistance for this combination?
2.3 ohm
3.0 ohm
10.7 ohm
27 ohm
What is the equivalent resistance?
1.33
2.25
3.00
7.50
