Unit 6 - Electricity
Quiz by Kate Downey
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29 questions
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- Q1Both light bulbs are lit in the circuit above. If one of the lights shut off and the other stays on, what kind of circuit is this?seriesparallelelectromagneticinduction30s
- Q2Which of the following is shown in this diagram?parallelDCseriesAC30s
- Q3Insulation materials reduce heat loss because they —are poor conductorspromote convectionallow the flow of electronsare good conductors30s
- Q4Current flowing in only one direction is called direct current.truefalse30s
- Q5Oscillating current is calledseries currentACDCparallel current30s
- Q6Alternating current is when the current changes direction every 120 times per second.truefalse30s
- Q7The current in our wall outlets and light sockets isAC60 ohmsDCboth AC and DC30s
- Q8What is the unit for voltage?joulesampsvoltsohm's30s
- Q9What is the unit for current?ohm'svoltsnetwonsamps30s
- Q10What is the unit for resistance?ohm'snewtonsvoltsamps30s
- Q11Give the equation for Ohm's Law.R = IVPE = mghV = IRI = V/R30s
- Q12The resistance of a hotplate is 48 Ω . How much current does the plate carry when connected to a 120-V source?none of the above5760 amps.4 amps2.5 amps30s
- Q13A certain steam iron carries a current of 6.4 A when connected to a 120 V source. What is the resistance of the steam iron?.05 ohms18.75 ohm's18.75 amps768 ohm's30s
- Q14Any magnet has two ends, each one is called a _______.electromagnetismmagnetmagnetic materialmagnetic pole30s
- Q15If two magnets were in this order: NS SN (south and south facing eachother) they wouldattract to one anotherrepel eachother30s