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WorksheetsCircuits Practice
Total questions: 15
Worksheet time: 11mins
A flashlight uses a 12V battery and has a bulb with a resistance of 155ohms. When the flashlight is on, how much current will be drawn from the battery? Round to the nearest hundredth.
.08A
.08mA
8A
80A
Ohm’s Law states that...
V=I/R
V=R/I
I=R/V
V=I*R
Which of the following is true?
In a series circuit all voltages are the same.
In a parallel circuit all current is the same across branches.
In a series circuit all resistances are the same.
In a parallel circuit all voltages are the same across branches.
Which of the following is true?
In a series circuit amperage (current) is constant.
In a parallel circuit there is no resistance.
Series circuits have multiple paths for energy to follow.
In a parallel circuit current is constant across all branches.
Kirchoff’s Law of Voltage
Parallel Circuit: It=I1+I2+I3...
Series circuit: Vt=V1+V2+V3...
Series Circuit: It=I1+I2+I3...
Parallel Circuit: Vt=V1+V2+V3...
Kirchoff’s Current Law
Series circuit: Vt=V1+V2+V3...
Series Circuit: It=I1+I2+I3...
Parallel Circuit: It=I1+I2+I3...
Parallel Circuit: Vt=V1+V2+V3...
What is the total resistance of this circuit?
6 Ohms
12 Ohms
24 Ohms
2 Ohms
In a series circuit, there are 3 light bulbs with resistances of 5, 10, and 15 ohms respectively, and a 20v battery. Which light bulb would be the brightest?
The top one (5ohms)
The bottom one (15ohms)
The one on the right (10ohms)
They all are the same
In a series circuit, R1 = 220ohms, R2 = 470ohms, and R3 = 1.2k ohms. If the total current is 6A, what is the voltage across each component?
V1= 12v
V2= 280v
V3= 1300v
V1= 38v
V2= 377v
V3= 852v
V1 = 1320V
V2 = 2820V
V3 = 7200V
V1= 500v
V2= 1200v
V3= 400v
In a series circuit, R1 = 749ohms, R2 = 12ohms, and R3 = 50ohms. What is the total current through each component if the total voltage is 36V? Round to the nearest hundredth.
I = 2A
I = 0.04A
I= 0.1A
I= 0.03A
In the following schematic diagram, find the total current, (I).
I= 0.2A
I= 28A
I= 3A
I = 12A
If a lamp has a parallel circuit, with a total voltage of 12V, R1 = 3, R2 = 12, R3 = 20, and the current is 9A. What is the total resistance? Round to the nearest hundredth.
Rt = 1.01ohms
Rt = 2.39ohms
Rt = 2.14ohms
Rt = 1.34ohms
Find the currents for each branch of the circuit.
R1=0.9
R2= 4.5
R3=9
R1= 0.7
R2= 2
R3= 3.2
R1= 3
R2= 6
R3= 11
R1= 5
R2= 10
R3= 22
Find the total resistance of the parallel circuit.
524 Ohms
625 Ohms
240 Ohms
130 Ohms
What is the total voltage of this parallel circuit?
200v
20v
12v
9v
