HVAC Unit 12 Basic Electricity and Magnetism

HVAC Unit 12 Basic Electricity and MagnetismWhat type of charge does an electron have? - correct answer Negative If five electrons combine with three protons, the net charge will be? - correct answer Negative Typical insulators are? - correct answer Glass, rubber, Plastic An ampre is? - correct answer A measure of the quantity of electrons flowing past a point in the electrical current in any given time If two light bulbs are wired in a series and one light bulb burns out, the other will? - correct answer It goes out What happens to the current if the resistance is increased? - correct answer The current decreases An element in an electrical heating unit is applied to a 232-volt power supply. The current flow through the element is 19 amps. What is the resistance of the element? - correct answer 12 ohms As loads are added in a parallel circuit, the total resistance of the circuit? - correct answer Will decrease To find the electrical power in an electrical circuit, you multiply? - correct answer Volts and amps If a conductor carrying electrical current is formed into a coil, the magnetic field amount the wire will? - correct answer Increase Ohmmeters are only to be used on circuits that are de-energized. - correct answer True In a circuit with two or more resistances in a series, the total resistance in the circuit is the sum of the resistances. - correct answer True If three bulbs are wired in a parallel and one bulb burns out, the total current of the circuit will decrease. - correct answer True In a circuit with two or more resistances in a parallel, the total resistance in the circuit is the sum of the resistances. - correct answer False