CFAA Fire Alarm Technician · Question
What happens in a series circuit if one component becomes an 'open circuit'?
If a series circuit is opened at any point, current flow stops for the entire circuit. CFAA Manual S1-Ch3.
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Question: What happens in a series circuit if one component becomes an 'open circuit'?
Answer options:
- The remaining devices continue to operate ✅ Current flow stops entirely
- Voltage increases at the other devices
- The fuse will blow immediately
Correct answer: Current flow stops entirely
Explanation: If a series circuit is opened at any point, current flow stops for the entire circuit. CFAA Manual S1-Ch3.
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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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