HVAC final exam, unit 12 Accurate 100%(SCORED A+)

An ampere is - ANSWER A measure of the quality of electrons flowing past a point in the electrical circuit in a given time What part of an atom moves from one atom to another? - ANSWER electron An element in an electric heating unit is applied to a 232-volt power supply. The current flow through the element is 19 amperes. What is the resistance of the element? - ANSWER 12 ohms If a conductor carrying electrical current is formed into a coil, the magnetic field around the wire will - ANSWER increase Typical insulators are - ANSWER Glass, rubber, and plastic To find the watts of electrical power in an electrical circuit, you multiply - ANSWER volts and amperes As loads are added in a parallel circuit, the total resistance of the circuit - ANSWER will decrease If five electrons combine with three protons, the net charge will be? - ANSWER negative If two light bulbs are wired in series, and one bulb burns out, the other bulb will? - ANSWER Go out What happens to the current in a circuit if the resistance is increased? - ANSWER The current decreases What type of charge does an electron have? - ANSWER negative T/F: A heat sink is a device to improve the purity of the electrons in an electrical circuit. - ANSWER False T/F: In a circuit with two or more resistance in parallel, the total resistance in the circuit is the of the resistance in the circuit. - ANSWER False T/F: Copper wire sizes are measured in circular mils. - ANSWER True T/F: The main purpose of a rectifier is to convert direct current (DC) to alternating current (AC). - ANSWER False T