Series Circuits
Current, voltage, equivalent resistance, and power in a single-path circuit
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APlus Physics YouTube Channel
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H) Series and Parallel Circuits
UC Irvine
Why is it a good idea to connect
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Which kind of circuit do we have below? Video on Circuits
Series
1) Series Circuit - circuit that has only one current path
Dorling Kindersley Books
Ex 1) Ammeter – Meter that measures Current
Reference Table Equations
a) IT = I1 = I2 = I3 = ... Total Current
b) RT = R1 + R2 + R3 + …
RT = 6.0 ohms
c) VT = V1 + V2 + V3 + ……
d) VT = ITRT OR RT = VT/IT
Find total current (IT)
VT = ITRT
20. V = IT(6.0 ohms)
IT = 3.3 amps = I1 = I2
Name that Circuit
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Check Your Understanding
5 quick questions — pick an answer to see if you’re right.
1. A series circuit is a circuit that has:
2. Resistors of 2.0 Ω, 3.0 Ω and 5.0 Ω are connected in series. What is the total resistance?
3. A 12 V battery powers a 2.0 Ω and a 4.0 Ω resistor in series. What is the current?
4. In a series circuit with a 9.0 V battery, one resistor has a 4.0 V drop. What is the drop across the only other resistor?
5. Old holiday lights were wired in series. When one bulb burned out, what happened?