Electrical & Plumbing Trivia

Behind every wall switch and kitchen faucet sits a system most people never think about until it stops working. This quiz covers the basic vocabulary of home electrical and plumbing systems, the kind of knowledge that makes a blown fuse or a slow drain a lot less mysterious.

No license required — just eleven questions about the wires and pipes that keep a house running.

The Basics of Electricity at Home

Electricity gets measured in a few key units: amps for current, volts for pressure, and ohms for resistance. A circuit breaker exists specifically to interrupt that flow before an overload turns into a fire hazard, and a GFCI outlet adds an extra layer of protection anywhere water and electricity might meet.

Where the Water Actually Goes

• A P-trap holds a small amount of water to block sewer gases from drifting back up the drain.
• Copper and PVC are both common choices for supply and drain lines, each suited to different jobs.
• A pressure relief valve on a water heater exists purely as a safety measure against dangerous buildup.

Small Details, Big Consequences

Color coding and thread seal tape might seem like minor details, but they matter. A black wire is standard for 'hot' current in US wiring, and a poorly wrapped pipe thread is often the difference between a dry cabinet and a slow leak nobody notices for weeks.