$CATEGORY: Science - Khan Academy/13.Magnetic Effect of electric current/13.Magnetic Effect of electric current--Magnetic field due to current carrying Conductor

//Multiple Choice

What does the right-hand thumb rule describe? {
    =Direction of magnetic field around a straight conductor
    ~Direction of force on a moving charge in a magnetic field
    ~Direction of electric current in a conductor
    ~Direction of gravitational force
}

In the right-hand thumb rule, which direction does the thumb point when the current flows in a wire? {
    ~Direction of magnetic field
    =Direction of current
    ~Direction of force
    ~Direction of electric field
}

According to the right-hand thumb rule, what does the curl of the fingers represent? {
    ~Magnetic force
    =Direction of magnetic field
    ~Direction of current
    ~Electric field
}

Which of the following is correct when applying the right-hand thumb rule for a current-carrying solenoid? {
    =Thumb points to the direction of magnetic field lines inside the solenoid
    ~Thumb points to the direction of the current
    ~Fingers curl in the opposite direction to the magnetic field
    ~The right hand rule is not applicable for solenoids
}

//True or False

The right-hand thumb rule helps in determining the direction of the electric field around a current-carrying conductor. {F}

The right-hand thumb rule is applicable only for straight conductors and not for solenoids. {F}

In the right-hand thumb rule, the direction of the magnetic field around a current-carrying conductor is opposite to the direction of current. {F}

The right-hand thumb rule can be applied to find the direction of force on a moving charged particle in a magnetic field. {T} 
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