Aim: To place more wires and components on the house Stem question how do we measure voltage and current in a circuit? Voltage You have to measure voltage with respect to a common, or a “ground” point. Oftentimes, these “grounds” are stable and unchanging and are most commonly around 0 V. Historically, the term ground originated from the usual application of ensuring the voltage potential is at 0 V by connecting the signal directly to the earth. Current It is measured in the unit of the Ampere, simply called “Amp,” (A). The most common way to measure current in a circuit is to break the circuit open and insert an “ammeter” in series (in-line) with the circuit so that all electrons flowing through the circuit also have to go through the meter. In the images below you can see the progress we made with the wiring. Lesson Summary: We put in the ceiling fan and the rest of the switches (with some minor difficulties explained in the blog report for this week) Revisited how to measure voltage and current in a circuit ![]()
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