Understanding Electrical Switches

What is the function of the contacts in a basic switch?

• To physically move the switch (toggle, button, etc.)

• To connect or disconnect electrical circuits

• To prevent electrical shock

• To provide a place for wires to connect to the switch

How many terminal screws does a single-pole switch have?

• One

• Two

• Three

• Four

What is the primary function of a single pole switch in an electrical circuit?

• To control the flow of electricity to a single device or light.

• To control multiple devices simultaneously.

• To regulate the voltage in a circuit.

• To act as a circuit breaker.

Which wire in the diagram is typically used to carry the current to the load in a single pole switch circuit?

• The white wire.

• The black wire.

• The green wire.

• The orange wire.

What is the primary function of a three-way switch?

• To control one light from two different locations

• To control multiple lights from one location

• To control the brightness of a light

• To control the speed of a fan

Which of the following is a recommended safety measure when working on electrical systems?

• Wearing insulated gloves

• Using bare hands for better grip

• Wearing metal jewelry for convenience

• Using wet gloves for better conductivity

Which wire connects to the circuit neutral in switch wiring basics?

• Black (hot) wire

• White (neutral) wire

• Ground wire

• Red (live) wire

What is the correct connection for the ground wire in switch wiring basics?

• Connect to the switch terminal

• Connect to the circuit neutral

• Connect to the green/bare copper ground screw

• Connect to the live wire

According to NEC 210.70(A)(1), where must at least one wall switch-controlled lighting outlet be installed?

• Only in living rooms

• Only in outdoor entrances

• In habitable rooms, attached garages, detached garages with electricity, and outdoor entrances

• Only in bathrooms

According to NEC 210.70(A)(2)(c), stairways with 6 or more risers must have:

• A switch at the top of the stairs only

• A switch at the bottom of the stairs only

• A switch at both the top and bottom of the stairs

• No switches