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    Question

    What is the effect of a magnetic field on a current

    carrying conductor?  
    A It experiences no force Correct Answer Incorrect Answer
    B It experiences a force perpendicular to both the magnetic field and the current Correct Answer Incorrect Answer
    C It experiences a force parallel to the current Correct Answer Incorrect Answer
    D It experiences a repulsive force Correct Answer Incorrect Answer

    Solution

    According to Lorentz force law, a currentcarrying conductor in a magnetic field experiences a force perpendicular to both the magnetic field and the current.   This is the principle behind electric motors.   The direction of the force can be found using Fleming's lefthand rule

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