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Unit 6 - Electricity

Quiz by Kate Downey

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29 questions
Show answers
  • Q1
    Both 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?
    Question Image
    series
    parallel
    electromagnetic
    induction
    30s
  • Q2
    Which of the following is shown in this diagram?
    Question Image
    parallel
    DC
    series
    AC
    30s
  • Q3
    Insulation materials reduce heat loss because they —
    are poor conductors
    promote convection
    allow the flow of electrons
    are good conductors
    30s
  • Q4
    Current flowing in only one direction is called direct current.
    true
    false
    30s
  • Q5
    Oscillating current is called
    series current
    AC
    DC
    parallel current
    30s
  • Q6
    Alternating current is when the current changes direction every 120 times per second.
    true
    false
    30s
  • Q7
    The current in our wall outlets and light sockets is
    AC
    60 ohms
    DC
    both AC and DC
    30s
  • Q8
    What is the unit for voltage?
    joules
    amps
    volts
    ohm's
    30s
  • Q9
    What is the unit for current?
    ohm's
    volts
    netwons
    amps
    30s
  • Q10
    What is the unit for resistance?
    ohm's
    newtons
    volts
    amps
    30s
  • Q11
    Give the equation for Ohm's Law.
    R = IV
    PE = mgh
    V = IR
    I = V/R
    30s
  • Q12
    The resistance of a hotplate is 48 Ω . How much current does the plate carry when connected to a 120-V source?
    none of the above
    5760 amps
    .4 amps
    2.5 amps
    30s
  • Q13
    A 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 ohms
    18.75 ohm's
    18.75 amps
    768 ohm's
    30s
  • Q14
    Any magnet has two ends, each one is called a _______.
    electromagnetism
    magnet
    magnetic material
    magnetic pole
    30s
  • Q15
    If two magnets were in this order: NS SN (south and south facing eachother) they would
    attract to one another
    repel eachother
    30s

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