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Intermediate Algebra

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The amount of current flowing into an electrical circuit varies inversely as the resistance in the circuit. When the resistance of a particular circuit is 5 ohms, the current is 42 amperes. what is the current when the resistance is 4 ohms?

  • Intermediate Algebra -

    I = E/R
    42 = E/5 so E = 210 volts

    at R=5 ohms,

    I = 210/4 = 52.5 amps

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