HVAC Excellence Study Guide) for Electric Test Questions with Correct Solutions, A+

Law of electric states that: - Like charges repel, and opposites attract When testing a supply voltage a maximum variation allowed is typically: - plus or minus five percent A Voltage Tester reads zero when there is: - no potential difference An Ammeter - Is used to measure the quantity and intensity of electrons flowing inside a wire, or through a load When will an ammeter have an indication/reading of zero. - When it is clamped around two wires feeding a load device, the magnetic fields will cancel each other out. Resistance: - refers to anything that offers opposition to the flow of electrons. A circuit without resistance to control the electron flow is considered: - shorted Reading a VOM (Volt-ohm-meter) the difference occurs across - the switch Increased resistance ________ amperage , and lower resistance ________ amperage. (OHM's Law) - decreases, increases With a fixed resistance, higher voltage _________ amperage and lower voltage ______ amperage. (OHM's Law) - increases, decreases