Ultimately, the best device depends on what you’re measuring. A voltmeter only measures volts, while a multimeter measures volts, current, resistance, humidity, and possibly much more, depending on the model. If you think you’ll need to measure more than volts, consider investing in a multimeter so you have a tool that can help you with various household projects.

A faulty light switch can trip a breaker due to circuit overload or a short circuit. A faulty light switch may not always trip a breaker, so don’t use that as your only sign that something’s wrong. Always investigate the cause of a switch that isn’t working properly, feels hot to the touch, or is making unusual noises.

In the majority of cases, you can replace an outlet with a USB outlet. USB charging receptacles install in the same spot as standard outlets and any electrician worth their salt is more than familiar with the replacement process. Additionally, it’s possible to replace yourself, but only if you have prior experience with your home’s electrical system, as it requires handling of wires.

Yes, you can daisy chain outlets, which involves connecting multiple outlets in series. However, ensuring the circuit can handle the additional load is important to avoid overloading and tripping the breaker. The total number of outlets on a single circuit should not exceed the recommended limit, typically eight on a 15-amp circuit. Hiring a licensed electrician is always advisable for complex installations or if you're unsure of what to do.