CFAA Fire Alarm Technician · Question
Two 12V 7Ah batteries are connected in series. What is the resulting output?
Batteries connected in series add their voltage but maintain the same Ah capacity. 12V + 12V = 24V. Capacity remains 7Ah. CFAA Manual S1-Ch5.
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Question: Two 12V 7Ah batteries are connected in series. What is the resulting output?
Answer options:
- 12V, 7Ah
- 12V, 14Ah
- 24V, 14Ah ✅ 24V, 7Ah
Correct answer: 24V, 7Ah
Explanation: Batteries connected in series add their voltage but maintain the same Ah capacity. 12V + 12V = 24V. Capacity remains 7Ah. CFAA Manual S1-Ch5.
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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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