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Coulomb - Quiz
Contributed by: Wallis
  • 1. How many microcoulombs of charge are typically involved in static electricity from rubbing materials together?
A) A few microcoulombs
B) A few kilocoulombs
C) A few milliampere-hours
D) A few coulombs
  • 2. What is the typical charge that travels through a lightning bolt?
A) Around 10800 C
B) Around 15 C, but can be up to 350 C for large bolts
C) Around 5 kC
D) Around 1400 mA⋅h
  • 3. How much charge travels through a typical alkaline AA battery from fully charged to discharged?
A) About 350 C
B) About 5 kC = 5000 C ≈ 1400 mA⋅h
C) About 10800 C
D) About 15 C
  • 4. How much charge can a typical smartphone battery hold?
A) 15 C
B) 10800 C ≈ 3000 mA⋅h
C) 350 C
D) 5000 C ≈ 1400 mA⋅h
  • 5. Who is the coulomb named after?
A) James Clerk Maxwell
B) Michael Faraday
C) Albert Einstein
D) Charles-Augustin de Coulomb
  • 6. When was the coulomb officially approved as a unit of electric charge?
A) 1881 by the International Electrical Congress
B) 1878 by the British Association for the Advancement of Science
C) 1948 by the IEC
D) 1908 by the IEC
  • 7. What was the coulomb part of before becoming the modern coulomb?
A) The imperial system
B) The EMU system of units
C) The SI system
D) The metric system
  • 8. What was the coulomb called before it became the modern coulomb?
A) International coulomb
B) Reproducible coulomb
C) Absolute coulomb or abcoulomb
D) EMU coulomb
  • 9. When was the 'international coulomb' introduced?
A) 1878 by the British Association for the Advancement of Science
B) 1881 by the International Electrical Congress
C) 1908 by the IEC
D) 1948 by the IEC
  • 10. What happened to the set of 'reproducible units'?
A) It was approved in 1881
B) It became the modern coulomb
C) It was introduced in 1908
D) It was abandoned in 1948
  • 11. How was the volt originally defined?
A) As the potential difference across a conductor when a current of one ampere dissipates one watt of power
B) As the unit of electric current
C) As the unit of electric charge
D) As the unit of electromotive force
  • 12. Approximately how many elementary charges are in one coulomb?
A) 9.648533212×104 e
B) 1.036×10−5 mol × NA e
C) 3.3356×10−10 e
D) 6.241509×1018 e
  • 13. What was the coulomb previously defined in terms of?
A) The Avogadro number
B) The charge of one mole of elementary charges
C) The force between two wires
D) The capacitance of a capacitor
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