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ETA Certification Test - Questions and Answers

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ETA Certification Test - Questions and Answers Watt's Law states that power is the product of current and voltage. Using algebra, how could the power be determined if resistance and current are know... n? current squared times the resistance Which of the following is commonly used to measure electrical energy consumption? Kilowatt-hours What happens as protective eye goggles age? Their resistance to scratching decreases The Wheatstone bridge can be used for precision measurement of: Resistance A term used to describe opposition to current flow is: Resistance The main purpose of a safety observer is to: turn off equipment in use and apply emergency first aid or cardiopulmonary resuscitation if needed With 70 volts applied to two 30 kΩ resistors in series connected to three 30 kΩ resistors in parallel forming a series-parallel circuit, what is the total current? 1 mA In an electrical circuit where voltage and resistance are known, which form of Ohms Law is used to find the circuit current? I=E/R Ohms Law states that voltage is the product of resistance and current. Using algebra, how would you determine the resistance? divide the voltage by the current If a series circuit has a current of about 15.4mA and a source voltage of 20V, the total resistance is approximately: 1300Ω A/an _____ stops the flow of current. Insulator A decrease in the current of a series circuit can be caused by a: resistance increase Fuses are rated in maximum ____ and ____. current, voltage Which device would most likely include a light level meter? Camera Battery cells are connected in series to: increase voltage output The most common functions of a generic multimeter are: voltmeter, ammeter, ohmmeter Switches are rated in maximum ____ and ___. current, voltage Digital multimeters eliminate which of the following disadvantages of analog meters? Parallax errors [Show More]

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