CFAA Fire Alarm Technician · Question
Calculate the total resistance of three resistors (10Ω, 20Ω, 30Ω) connected in series.
In a series circuit, the total resistance is the sum of individual resistances: 10 + 20 + 30 = 60 Ohms.
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Question: Calculate the total resistance of three resistors (10Ω, 20Ω, 30Ω) connected in series.
Answer options:
- 10 Ω ✅ 60 Ω
- 6.6 Ω
- 30 Ω
Correct answer: 60 Ω
Explanation: In a series circuit, the total resistance is the sum of individual resistances: 10 + 20 + 30 = 60 Ohms.
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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