Exercise: Series Parallel Circuits

Questions for: Series Parallel Circuits

If a series–parallel circuit has all 30-ohm resistors, what is the total resistance when R1 is in series with a parallel circuit consisting of R2 and R3?
A:
10 ohms
B:
20 ohms
C:
45 ohms
D:
90 ohms
Answer: C
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The first goal(s) to accomplish in analyzing a complex series–parallel circuit is to:
A:
equate all parallel components
B:
equate all series components
C:
solve for all the voltage drops
D:
solve for the total current and resistance
Answer: D
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If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?
A:
increases
B:
decreases
C:
remains the same
D:
cannot tell
Answer: B
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How much current is flowing through R1 in the given circuit?

A:
0.3 A
B:
0.15 A
C:
0.5 A
D:
0.68 A
Answer: C
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Which circuit fault do the meter readings in the given figure indicate?

A:
The 1 komega.gif resistor is open.
B:
The 4.7 komega.gif resistor is open.
C:
The 2.2 komega.gif resistor is open.
D:
The 3.3 komega.gif resistor is open.
Answer: B
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