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Magnetic field lines show the direction (at every point) along which a small magnetised needle aligns (at the point). Do the magnetic field lines also represent the lines of force on a moving charged particle at every point ?

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No. The magnetic force is always normal to B (remember magnetic force `= qv xx B`). It is misleading to call magnetic field lines as lines of force.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-MAGNETISM AND MATTER-Textual Examples
  1. Figure shows a small magnetised needle P placed at a point O. The arro...

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  2. Figure shows a small magnetised needle P placed at a point O. The arro...

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  3. Figure shows a small magnetised needle P placed at a point O. The arro...

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  4. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  5. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  6. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  7. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  8. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  9. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  10. Many of the diagrams given in Fig. show magnetic field lines (thick li...

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  11. Magnetic field lines show the direction (at every point) along which a...

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  12. Magnetic field lines can be entirely confined within the core of a tor...

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  13. If magnetic monopoles existed, how would tha Gauss's law of magnetism ...

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  14. Does a bar magnet exert a torque on itself due to its own field ? Does...

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  15. Magnetic field arises due to charges in motion. Can a system have ma...

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  16. A solenoid has a core of a material with relative permeability 400. T...

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  17. A solenoid has a core of a material with relative permeability 400. T...

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  18. A solenoid has a core of a material with relative permeability 400. T...

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  19. A solenoid has a core of a material with relative permeability 400. T...

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  20. A domain in ferromagnetic iron is in the form of a cube of side length...

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