$CATEGORY: Science - Khan Academy/13.Magnetic Effect of electric current/13.Magnetic Effect of electric current--Force on a current carrying conductor in a magnetic field

//Multiple Choice

Fleming's left-hand rule is used to determine the direction of\: {
    ~Electric current
    ~Magnetic field
    =Force acting on a current-carrying conductor
    ~Electromagnetic waves
}

According to Fleming’s left-hand rule, the thumb represents the direction of\: {
    ~Electric current
    =Force
    ~Magnetic field
    ~Voltage
}

In Fleming’s left-hand rule, the middle finger represents the direction of\: {
    ~Magnetic field
    =Current
    ~Force
    ~Motion
}

If a current-carrying conductor is placed in a magnetic field, it experiences a force due to the\: {
    =Interaction between the electric current and the magnetic field
    ~Interaction between the electric field and magnetic field
    ~The interaction between two magnetic fields
    ~None of the above
}

The force experienced by a current-carrying conductor placed in a magnetic field is maximum when the angle between the conductor and the magnetic field is\: {
    ~0°
    ~45°
    =90°
    ~180°
}

//True or False

Fleming’s left-hand rule is used to determine the direction of induced current. {F}

The forefinger in Fleming's left-hand rule points in the direction of the current. {F}

According to Fleming’s left-hand rule, the middle finger points in the direction of the current. {T}

The thumb in Fleming’s left-hand rule points in the direction of the magnetic field. {F}

The force experienced by a current-carrying conductor in a magnetic field is zero when the current is parallel to the magnetic field. {T}

//Fill in the blanks



//Numericals



//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Thumb in Fleming’s left-hand rule -> Direction of force
=Forefinger in Fleming’s left-hand rule -> Direction of magnetic field
=Middle finger in Fleming’s left-hand rule -> Direction of electric current
=Force on a conductor -> Perpendicular to current and magnetic field
=Angle for maximum force -> 90° between current and magnetic field
}


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