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Worksheet: Electric Current

Q1:

An electric current of 0.211 mA passes through an electrolytic cell for 2.00 minutes. How many moles of electrons have passed through the cell?

  • A 1 . 5 7 × 1 0 5 mol
  • B 2 . 1 9 × 1 0 9 mol
  • C 1 . 3 9 × 1 0 8 mol
  • D 2 . 6 2 × 1 0 7 mol
  • E 1 . 1 6 × 1 0 1 0 mol

Q2:

Calculate the charge of 1.000 mole of electrons.

  • A 6 . 2 4 2 × 1 0 8 C
  • B 1 . 0 3 6 × 1 0 5 C
  • C 5 . 4 8 6 × 1 0 7 C
  • D 9 . 6 4 9 × 1 0 5 C
  • E 2 . 6 6 0 × 1 0 7 C

Q3:

Calculate the number of electrons in 1.000 coulomb of electrical charge.

  • A 1 . 0 9 8 × 1 0 3 0
  • B 6 . 0 2 2 × 1 0 2 3
  • C 1 . 8 2 3 × 1 0 1 7
  • D 6 . 2 4 2 × 1 0 1 8
  • E 9 . 1 0 9 × 1 0 3 1