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Quiz 3 on Electric Current and Coulombs

Quiz by Mr.MD Showket Hasan

Grade 9
Science
Thailand Core Curriculum

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20 questions
Show answers
  • Q1
    What is the formula to calculate electric current?
    I = Q/t
    I = Q × t
    I = Q/t
    I = Q + t
    30s
    SC9.FM.5
  • Q2
    If 10 Coulombs of charge pass through a conductor in 5 seconds, what is the current?
    0.20833333333333334
    0.4166666666666667
    0.08333333333333333
    0.041666666666666664
    30s
  • Q3
    What is the unit for electric current?
    Watt
    Ohm
    Volt
    Ampere
    30s
  • Q4
    What does one Ampere represent?
    1 Ohm per second
    1 Volt per second
    1 Watt per second
    1 Coulomb per second
    30s
  • Q5
    A wire carries a current of 3 A for 4 seconds. How much charge has passed through it?
    12 C
    7 C
    0.75 C
    24 C
    30s
  • Q6
    If 5 Coulombs of charge flow through a point in 2 seconds, what is the current?
    2.5 A
    0.4 A
    0.4166666666666667
    0.041666666666666664
    30s
  • Q7
    How many electrons are approximately in one Coulomb of charge?
    1×10¹⁹
    3.2×10¹⁸
    1.6×10⁻¹⁹
    6.25×10¹⁸
    30s
  • Q8
    What is the charge of a single electron?
    +1.6×10⁻¹⁹ C
    -3.2×10⁻¹⁹ C
    +6.25×10¹⁸ C
    -1.6×10⁻¹⁹ C
    30s
  • Q9
    If 3 Amperes of current flow for 6 seconds, how much charge passes through the conductor?
    9 C
    3 C
    18 C
    0.5 C
    30s
  • Q10
    What quantity remains constant according to the law of conservation of charge?
    Current
    Voltage
    Resistance
    Charge
    30s
  • Q11
    If a charge of 20 Coulombs flows in 10 seconds, the current is
    0.20833333333333334
    0.08333333333333333
    0.5 A
    0.041666666666666664
    30s
  • Q12
    If a current of 0.5 A flows through a wire for 4 seconds, what is the total charge transferred?
    2 C
    0.5 C
    8 C
    1 C
    30s
  • Q13
    How many electrons pass through a point in a conductor if 2 Coulombs of charge pass in 1 second?
    3.2×10¹⁹
    6.25×10¹⁹
    6.25×10¹⁸
    1.25×10¹⁸
    30s
  • Q14
    The conventional direction of electric current is defined as the flow of
    Negative charge
    Both positive and negative charges
    Positive charge
    Neutrons
    30s
  • Q15
    A circuit has a current of 5 A. How much charge flows through it in 3 seconds?
    1.67 C
    15 C
    8 C
    5 C
    30s

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