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Physics 300
Unit Review: Circuitry
Mr. Youker |
You are to complete this Homework Assessment through the use of your text, notes, and brain. You are not
to receive aid on this assignment from your classmates, friends, teachers, or other similar source. Answer
all questions completely on a separate piece of paper.
1.
A simple circuit consists of two resistors (5 Ω, 15 Ω) placed in series with a 9.0 V battery.
a. Produce a schematic diagram of this circuit, including both resistors and the battery.
b. Calculate the net resistance of the circuit.
c. Calculate the amount of current passing through each resistor.
d. Calculate the voltage (∆V) across each resistor.
e. Add a voltmeter to your diagram, making it measure the ∆V of one of the resistors.
2.
A simple circuit consists of two resistors (30 Ω, 15 Ω) placed in parallel with a 9.0 V battery.
a. Produce a schematic diagram of this circuit, including both resistors and the battery.
b. Calculate the voltage (∆V) across each resistor.
c. Calculate the amount of current passing through each resistor.
d. Calculate the net resistance of the circuit.
e. Add an ammeter to your diagram, making it measure the current in one of the resistors.
3.
A complex circuit consists of a 20 Ω and a 10 Ω resistor placed in series with one another. A 40 Ω
resistor is then placed in parallel with only the 20  resistor. An ammeter registers the current
through the 20 Ω resistor to be 6.0 A. A battery supplies a voltage to the whole circuit.
a. Produce a schematic diagram of this circuit, including all three resistors and the battery.
b. Calculate the amount of current passing through each resistor.
c. Calculate the voltage (∆V) across each resistor and the total voltage.
d. Determine the power delivered by the 10 Ω resistor.
e. If the 40 Ω resistor were to be removed, would the power delivered by the 10 Ω resistor
increase, decrease, or remain the same? Explain.
4.
Determine the net resistance of this circuit: Each resistor (
5.
Sketch the circuit and fill in the missing information:
A circuit consists of two series resistors (R1, R2) with a parallel branch (R3) around both R1 and R2.
Battery EMF:
180
V
R1 =


V1 =
R2 =


V2 =


V3 =
R3 =
Diagram:
90
Net Current:
10
A
) is 100 
Net Resistance:
32

V
I1 =
A
P1 =
W
V
I2 =
A
P2 =
W
V
I3 =
A
P3 =
W