Name___________________________
Date _____________________
SERIES/PARALLEL
CIRCUITS TEST
Answer ALL questions. You must show working to receive
full marks.
1. Calculate the total
resistance for a 5 ohm, a 3 ohm, and a 10 ohm resistor connected in series. (3 marks)
2. Calculate the total
resistance for five 120 ohm resistors in series. (3 marks)
3. A string of fifty 15 ohm
Christmas tree lights are connected in series. One burns out, they all burn
out. Calculate the total resistance. (3
marks)
4. If those fifty 15 ohm,
series connected Christmas tree lights, are connected to a 115 V source. Calculate
the total current in the circuit. (3
marks)
5. Calculate the total
resistance for two 180 ohm resistors connected in parallel. (3 marks)
6. A 10 ohm, 20 ohm, and 100
ohm resistors are connected in parallel. Calculate the total resistance. (3 marks)
7. A string of five 10 ohm
Christmas tree light are connected in parallel. One burns out, the rest will
stay lit. Calculate the total resistance. (3
marks)
8. Two 100 ohm resistors are
connected in series and they are connected to a 1.5 V DC battery. What is the
total current flowing in the circuit? (4
marks)
9. Three 1.2 ohm lamps are
connected in series and connected to a 3 volt battery. Calculate the total
current in the circuit. (4 marks)
10.
Three identical lamps
are connected in series to each other and then connected to a 6 V battery. What is the voltage drop across each lamp? (3 marks)
11.
How does the current
behave in a series circuit? (2 marks)
12.
Two 5 ohm resistors
are connected in parallel followed by two more 5 ohm resistors connected in
parallel. What value of a single resistor would be used to replace these four
resistors? (4 marks)
13.
In the diagram below,
the batteries are 1.5 V and each lamp has a resistance of 1.1 ohm. When the
switch is closed,
a. What is the current
through each lamp? (4 marks)
b. Power is measured in
watts. If power = voltage x current, what is the power dissipated in each lamp?
(2 marks)
14.
In the diagram below,
a. What is the current
through the lamp when the switch is open? (1
mark)
b. What is the current
through the lamp when the switch is closed? (3 marks)
15.
In the diagram below,
a. What is the internal
resistance of the light after the switch is closed? (3 marks)
b. What is the power
dissipated by the lamp? (2 marks)
NB the 400mA should be 0.004 A
|
16.
How does voltage
behave across components in a parallel circuit? (2 marks)
17.
What happens to the
current in a parallel circuit? (2 marks)
18.
In the circuit below, after
the switch is closed, calculate:
a. The total resistance. (3 marks)
b. The voltage across each
resistor. (2 marks)
c.
The current flow through each resistor. (2 marks)
19.
a. Calculate the total
resistance for the circuit above. (4
marks)
b. Find the total current in the circuit. (2 marks)
c.
Calculate the current that flows through R2. (3 marks)
d. Calculate the current that
flows through R5. (3 marks)
e.
Calculate the voltage drop across R1/R2. (3 marks)
f.
Calculate the voltage drop across R3/R4/R5. (3 marks)
Total Marks: 80
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