$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

The magnetic field at the center of a current-carrying circular loop is\: {
    ~Zero
    =Maximum
    ~Uniform throughout the loop
    ~Decreases with the radius of the loop
}

The magnetic field produced by a current-carrying circular loop is\: {
    ~Parallel to the plane of the loop
    =Perpendicular to the plane of the loop
    ~Circular and perpendicular to the current
    ~None of the above
}

If the number of turns in a current-carrying circular loop is doubled, the magnetic field at the center will\: {
    ~Remain the same
    ~Become half
    =Double
    ~Become zero
}

The direction of the magnetic field due to a current-carrying loop at any point on its axis can be determined using\: {
    ~Fleming’s right-hand rule
    ~Fleming’s left-hand rule
    =Right-hand thumb rule
    ~Ampere’s law
}

The magnetic field at the center of a current-carrying loop depends on\: {
    =Current and radius of the loop
    ~Material of the wire
    ~Temperature
    ~Shape of the wire
}

//True or False

The magnetic field inside a current-carrying circular loop is uniform. {F}

The magnetic field at the center of a current-carrying loop is directly proportional to the current passing through the loop. {T}

The direction of the magnetic field produced by a current-carrying loop can be reversed by reversing the direction of the current. {T}

The magnetic field due to a current-carrying loop is stronger near the edges of the loop than at the center. {F}

The magnetic field at the center of a circular loop depends on the number of turns in the loop. {T}

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