How many electrons flow through a battery that delivers a current of 3.0 A for 12 s?

Physics homework, need help.

3 Answers

  • 1 Coulomb is the charge that moves when 1 Amp flows for 1 Second, so here we have 3 x 12 = 36 Coulombs

    1 Coulomb is equal to 6.24151 × 10^18 electrons (thanks Wikipedia).

    So the number of electrons that flows when 3A flows for 12 S is :

    3 x 12 x 6.24151 × 10^18 electrons = 2.24694 x 10^20 electrons.

    Source(s): Basic high school physics.
  • charges flow= 3*12=36 Coulombs.

    # of electrons=36 C/(1.6*10^-19)=22.5*10^19 electrons.

  • 36 C

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