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A current through a horizontal power line flows in _______ direction. Applying the right-hand thumb rule, the magnetic field turns clockwise in a plane perpendicular to the wire when viewed from the east end.
- a)North-South
- b)East-West
- c)Vertical
- d)Diagonal
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
A current through a horizontal power line flows in _______ direction. ...
Understanding Current Direction in Power Lines
When analyzing the direction of current in a horizontal power line, it is essential to use the right-hand thumb rule to determine the associated magnetic field.
Direction of Current Flow
- The current through the horizontal power line flows from west to east.
- This means the current moves in an eastward direction, which is crucial for understanding the resulting magnetic field.
Applying the Right-Hand Thumb Rule
- To apply this rule, point your right thumb in the direction of the current (east).
- Your curled fingers will indicate the direction of the magnetic field lines generated around the wire.
Magnetic Field Orientation
- When viewed from the east end of the wire, the magnetic field circles the wire in a clockwise direction.
- This clockwise rotation of the magnetic field indicates that as you look towards the current flow from the east, the field lines move down on the right side of the wire and up on the left.
Conclusion
- Since the current flows eastward, the magnetic field indeed turns in a clockwise manner when viewed from the east end.
- Therefore, the correct answer is option 'B' (East-West), as it accurately describes the orientation of the current in relation to the magnetic field's direction.
This understanding is fundamental in electromagnetism and is essential for various applications in physics and engineering.
When analyzing the direction of current in a horizontal power line, it is essential to use the right-hand thumb rule to determine the associated magnetic field.
Direction of Current Flow
- The current through the horizontal power line flows from west to east.
- This means the current moves in an eastward direction, which is crucial for understanding the resulting magnetic field.
Applying the Right-Hand Thumb Rule
- To apply this rule, point your right thumb in the direction of the current (east).
- Your curled fingers will indicate the direction of the magnetic field lines generated around the wire.
Magnetic Field Orientation
- When viewed from the east end of the wire, the magnetic field circles the wire in a clockwise direction.
- This clockwise rotation of the magnetic field indicates that as you look towards the current flow from the east, the field lines move down on the right side of the wire and up on the left.
Conclusion
- Since the current flows eastward, the magnetic field indeed turns in a clockwise manner when viewed from the east end.
- Therefore, the correct answer is option 'B' (East-West), as it accurately describes the orientation of the current in relation to the magnetic field's direction.
This understanding is fundamental in electromagnetism and is essential for various applications in physics and engineering.
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A current through a horizontal power line flows in _______ direction. ...
The current through a horizontal power line flows in the East-West direction. According to the right-hand thumb rule, this orientation results in a magnetic field that circulates clockwise when observed from a plane perpendicular to the wire, viewing from the east end.
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A current through a horizontal power line flows in _______ direction. Applying the right-hand thumb rule, the magnetic field turns clockwise in a plane perpendicular to the wire when viewed from the east end.a)North-Southb)East-Westc)Verticald)DiagonalCorrect answer is option 'B'. Can you explain this answer?
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