write rule of Flemming,Maxwell and clock phase rule
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Explanation:
Assume that the current carrying conductor is held in the right hand so that the fingers wrap around the conductor and the thumb is stretched (as shown in the figure at left). If the thumb is along the direction of current, wrapped fingers will show the direction of circular magnetic field lines.
Right Handed Cork Screw Rule
right handed cork screw ruleIf a right handed cork screw is assumed to be held along the conductor, and the screw is rotated such that it moves in the direction of the current, direction of magnetic field is same as that of the rotation of the screw.
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∆ write rule of Flemming, Maxwell and clock phase rule
- When a current-carrying conductor is placed under a magnetic field, a force acts on the conductor. The direction of this force can be identified using Fleming’s Left Hand Rule. Likewise, if a moving conductor is brought under a magnetic field, electric current will be induced in that conductor. The direction of the induced current can be found using Fleming’s Right Hand Rule. It is important to note that these rules do not determine the magnitude, instead show only the direction of the three parameters (magnetic field, current, force) when the direction of the other two parameters is known. Fleming’s Left-Hand Rule is mainly applicable to electric motors and Fleming’s Right-Hand Rule is mainly applicable to electric generators.
- Right hand thumb rule was given by Maxwell, according to him imagine you are holding a current-carrying wire in your right hand such that your thumb points in direction of the current, then the direction in which fingers wrap the wire represents the direction of magnetic lines of force. When the position of thumb will be upward the curled fingers will be anti-clockwise and the magnetic field will be clockwise and vice versa. The angle should be 90 degrees.
- According to the clock face rule we look at one face of a circular wire ( or coil) through which a current is passing.
- If the current around the face of the circular wire ( or coil) flows in the clockwise direction, then that face of the circular wire will be South pole ( S-pole).
- If the current around the face of the circular wire ( or coil) flows in the anti-clockwise direction, then that face of the circular wire will be North pole ( N-pole).
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