Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is
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In a series circuit, the individual powers are additive.
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Which of the following series combinations dissipates the most power when connected across a 120 V source?
A. One 220 Ω resistor
B. Two 220 Ω resistors
C. Three 220 Ω resistors
D. Four 220 Ω resistors
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A series circuit acts as a current divider.
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A series circuit acts as a voltage divider.
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The total resistance of a circuit is 680 Ω. The percentage of the total voltage appearing across a 47 Ω resistor that makes up part of the total series resistance is
A. 68 %
B. 47 %
C. 69 %
D. 6.91 %
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The total resistance of eight 5.6 kΩ resistors in series is
A. 8 Ω
B. 5,600 Ω
C. 4,480 Ω
D. 44,800 Ω
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When a fourth resistor is connected in series with three resistors, the total resistance
A. Increases by one-fourth
B. Increases
C. Decreases
D. Remains the same
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If a 24 V and a 6 V battery are series opposing, the total voltage is
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If a 6 V and a 9 V source are connected series aiding, the total voltage is
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The following resistors (one each) are connected in a series circuit: 470 Ω, 680 Ω, 1 kΩ, and 1.2 kΩ. The voltage source is 20 V. Current through the 680 Ω resistor is approximately
A. 60 mA
B. 30 mA
C. 6 mA
D. 300 mA
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Two 6 V batteries are connected series aiding across two 1.2 kΩ resistors in series. Current through each resistor is
A. 5 mA
B. 10 mA
C. 0 A
D. 2.5 mA
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A series circuit has a 24 V source and a total resistance of 120 Ω. The current through each resistor is
A. 24 mA
B. 200 mA
C. 120 mA
D. 20 mA
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The voltage at one point in a circuit is always measured relative to another point.
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A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is
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