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31 January, 11:59

Moving 4.0 coulombs of charge through a circuit

requires 48 joules of electric energy. What is the

potential difference across this circuit?

(1) 190 V (3) 12 V

(2) 48 V (4) 4.0 V

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Answers (1)
  1. 31 January, 12:27
    0
    We know that V=E/Q Where V is the PD, E is the energy, and Q is the charge.

    Substituting in the values gives V=48/4=12

    Therefore the PD across the circuit is 12V
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