Physics
Grade-10
Easy
Question
Which of the given statements is incorrect regarding magnetic field lines?
- The direction of the magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points.
- Magnetic field lines are closed curves.
- Magnetic field lines are always parallel.
- Magnetic field lines are imaginary lines.
Hint:
The magnetic field lines are not parallel always.
The correct answer is: Magnetic field lines are always parallel.
- Magnetic field lines are fictitious lines that are used to depict the direction and strength of the magnetic field in space.
- The magnetic field strength is represented by how closely magnetic field lines are spaced.
- Any point's magnetic field strength runs parallel to the magnetic field line.
- Using a magnetic needle, the direction may be determined at any place as the magnetic needle's North Pole will always point in the direction of the magnetic field line.
- Close loops are formed by these magnetic field lines.
- A homogeneous magnetic field is one in which magnetic field lines are equally spaced and parallel to one another.
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