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math

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A car has a 12 volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when the key is turned?

  • Physics -

    V=IR
    V= 12v
    R= 0.22 ohms
    I = V/R
    = 12/0.22
    =54.5 amps

  • math -

    E= I x R is the formula
    the answer is .5454
    I=amperes
    R=ohms
    E=volts
    12volts/22

  • math -

    actually David is right. I forgot the decimal place from the 22 so it is 54.5 amps

  • math -

    thank you

  • math -

    Three cells are connected. The external resistance of each cell is 2 ohms. The voltage of each cell is 1.5 volts. The resistance of the external circuit is 2.3 ohms. What is the circuit current to the nearest tenth ampere?

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