CFAA Fire Alarm Technician · Question
According to Ohm's Law, if the resistance in a circuit remains constant and the voltage increases, what happens to the current?
In Ohm's law, Current I = V/R. If Resistance (R) is constant, increasing Voltage (V) results in a proportional increase in Current (I).
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Question: According to Ohm's Law, if the resistance in a circuit remains constant and the voltage increases, what happens to the current?
Answer options:
- Decrease ✅ Increase
- Stay the same
- Drop to zero
Correct answer: Increase
Explanation: In Ohm's law, Current I = V/R. If Resistance (R) is constant, increasing Voltage (V) results in a proportional increase in Current (I).
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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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