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PART 2

Quiz by mark dominic cagurol

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18 questions
Show answers
  • Q1
    In what direction do sound waves travel from a vibrating source?
    no direction
    in opposite direction
    in all directions
    in two directions
    30s
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  • Q2
    What does sound need to travel?
    energy
    matter
    light
    vacuum
    30s
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  • Q3
    Which of the following is used to transport sound waves?
    mass
    vacuum
    light
    medium
    30s
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  • Q4
    Sound is a type of mechanical wave which is transmitted through a medium that is solid, liquid, or gas. Which of the following statements is true about a sound wave?
    Sound wave travels at different speeds in the same media.
    Sound wave travels at highest speed in vacuum.
    Sound wave travels at different speeds in different media.
    Sound wave travels at the same speed in different media.
    30s
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  • Q5
    Which of the following directly affects the speed of sound in a medium?
    texture
    odor
    temperature
    shape
    30s
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  • Q6
    Atom has subatomic particles that create electric current. Which part of an atom an electric current originates?
    entire atom acting as a unit
    nucleus
    negatively charged electron
    positively charged protons
    30s
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  • Q7
    Different materials have different amounts of resistance. Conductors are materials that permit electric charge to flow freely from particle to particle. Which of the following materials has greater amounts of resistance?
    iron cod
    plastic box
    metal rod
    steel bar
    30s
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  • Q8
    Which of the following correctly describes voltage?
    The flow of protons
    The number of charged particles that pass each second
    The difference in potential energy of charged particles.
    Resist the flow of charge.
    30s
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  • Q9
    Which of the following statements is incorrect?
    The SI unit of current is ampere
    The SI unit of charge is the coulomb.
    The SI unit of voltage is volt.
    The SI unit of resistance is watt.
    30s
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  • Q10
    What does the letter 'I' stand for in Ohm's Law?
    Current
    Power
    Resistance
    Voltage
    30s
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  • Q11
    Which word means how fast the electrons flow?
    Resistance
    Power
    Current
    Voltage
    30s
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  • Q12
    Which word means how hard it is for electrons to flow?
    Voltage
    Power
    Resistance
    Current
    30s
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  • Q13
    Which of the following laws expresses the mathematical relationship between voltage, current, and resistance?
    Tesla's Law
    Newton’s Law
    Faraday's Law
    Ohm's Law
    30s
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  • Q14
    What happens to current if the voltage stays the same and resistance is increased?
    decreases
    losses resistance
    stays the same
    increases
    30s
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  • Q15
    What will happen to the total resistance and to the total current as the number of resistors increases respectively?
    increases, decreases
    increases, increases
    decreases, decreases
    decreases, increases
    30s
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  • Q16
    Which of the following is a correct statement of Ohm's law?
    V=I/R
    R=VI
    I=V/R
    I=R/V
    30s
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  • Q17
    An electric heater works by passing a current of 100 A through a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it?
    136V
    120V
    110V
    101V
    30s
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  • Q18
    How much is the resistance of an alarm clock draws 0.5 A of current when connected to a 120 volt circuit.
    60.5Ω
    120.5Ω
    240Ω
    100Ω
    30s
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