If a control relay is activated, what happens to the circuit?

If a control relay is activated, what happens to the circuit?

• A. The circuit opens
• B. The circuit closes
• C. The circuit remains unchanged
• D. The circuit alternates

Answer: (B)

When a control relay is activated, it effectively closes the circuit. A control relay is designed to act as an electrical switch that can open or close a circuit when it receives a signal, typically from a control system. When the relay is energized, its internal contacts move from an open state to a closed state, allowing current to flow through the circuit. This process enables components connected in the circuit to operate, such as motors, lights, or other devices that rely on the relay to control their power supply. In contrast, if the relay were deactivated, it would return to an open state, interrupting the circuit and stopping the flow of current. This clear function distinguishes relays as important components in controlling larger currents or voltages with low-power control signals.

When a control relay is activated, it effectively closes the circuit. A control relay is designed to act as an electrical switch that can open or close a circuit when it receives a signal, typically from a control system.

When the relay is energized, its internal contacts move from an open state to a closed state, allowing current to flow through the circuit. This process enables components connected in the circuit to operate, such as motors, lights, or other devices that rely on the relay to control their power supply.

In contrast, if the relay were deactivated, it would return to an open state, interrupting the circuit and stopping the flow of current. This clear function distinguishes relays as important components in controlling larger currents or voltages with low-power control signals.