The magnetic field in a given region is uniform. Draw a diagram to represent it.
A uniform magnetic field is represented by drawing parallel straight lines that are equidistant from each other. Arrows are marked on these lines to indicate the direction of the magnetic field.
The context states that the relative strength of the magnetic field is shown by the degree of closeness of the field lines. Since the field is uniform, the strength is constant at every point, meaning the lines must be equally spaced. Furthermore, the context mentions that no two field-lines cross each other. Parallel lines satisfy this condition while maintaining equal spacing, accurately representing a uniform field.
Explanation
The question tests the understanding of how magnetic field strength is represented visually. The provided text clarifies that the 'degree of closeness' of field lines corresponds to the field's strength. In a uniform field, this strength does not vary, so the lines must be equidistant. Additionally, the text establishes that field lines never cross. The only geometric arrangement where lines are equidistant and do not cross is a set of parallel lines. Therefore, students must draw parallel lines with arrows to represent a uniform magnetic field.
Solution Steps
Step 1: Understand that a 'uniform' magnetic field means the magnetic field strength is the same at all points in the region.
Step 2: Apply the rule from the context that the 'relative strength of the magnetic field is shown by the degree of closeness of the field lines'. This implies lines must be equally spaced.
Step 3: Apply the rule from the context that 'no two field-lines are found to cross each other'. This implies the lines must be parallel.
Step 4: Draw parallel, equidistant straight lines with arrows to represent the uniform field.