series circuit
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42 Terms
What is a series circuit?
A circuit where all components are connected end-to-end in a single path.
How many paths does current have in a series circuit?
One path.
What is the main characteristic of current in a series circuit?
Current is constant throughout the circuit.
What happens to voltage in a series circuit?
Voltage drops across each resistor.
What is the main difference between series and parallel circuits?
Series circuits have constant current; parallel circuits have constant voltage.
Why are series circuits easier to wire?
They require simpler wiring.
What is an advantage of a series circuit?
Easier fault detection.
What happens if one component fails in a series circuit?
The entire circuit stops working.
What everyday example demonstrates a series circuit?
Some strands of Christmas lights.
What does Rule 1 of series circuits state?
Total current equals the current through every resistor.
Why is current constant in a series circuit?
Because there is only one path for electron flow.
What is the formula for current in a series circuit?
IT = I1 = I2 = I3.
If the current at the power source is 3 amps, what is the current through each resistor?
3 amps.
What does IT represent?
Total current.
What does I1 represent?
Current through resistor 1.
What does Rule 2 of series circuits state?
Total resistance equals the sum of all resistances.
What is the formula for total resistance in a series circuit?
RT = R1 + R2 + R3.
Why can resistors in series be treated as one large resistor?
Because current has only one path to travel.
If R1 = 5 Ω, R2 = 2 Ω, and R3 = 3 Ω, what is RT?
10 Ω.
What does RT represent?
Total resistance.
What unit is used to measure resistance?
Ohms (Ω).
What does Rule 3 of series circuits state?
Total voltage equals the sum of all voltage drops.
What is a voltage drop?
The decrease in voltage across a resistor.
Why does voltage drop across resistors?
Because resistors share the total circuit voltage.
What is the formula for total voltage in a series circuit?
VT = V1 + V2 + V3.
What does VT represent?
Total voltage.
What is the relationship between resistance and voltage drop?
Directly proportional.
What happens to voltage drop when resistance increases?
Voltage drop increases.
What law is used to calculate voltage drop?
Ohm’s Law.
What is the Ohm’s Law formula for voltage?
V = I × R.
In Ohm’s Triangle, what do you do to solve for voltage?
Cover V and multiply I × R.
If current is 3 A and resistance is 5 Ω, what is the voltage drop?
15 V.
If current is 3 A and resistance is 2 Ω, what is the voltage drop?
6 V.
If current is 3 A and resistance is 3 Ω, what is the voltage drop?
9 V.
What is the total voltage if voltage drops are 15 V, 6 V, and 9 V?
30 V.
In the example circuit, what is the total current?
3 A.
In the example circuit, what is the total resistance?
10 Ω.
In the example circuit, what is the total voltage?
30 V.
What remains constant in a series circuit?
Current.
What changes across each resistor in a series circuit?
Voltage.
Series Circuit = C-R-V
Current = Constant, Resistance = Adds, Voltage = Drops and Adds.
What is a mnemonic for remembering series circuit characteristics?
"Current Cruises, Resistance Racks Up, Voltage Vanishes." 🚗⚡