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