Where is the field stronger?
Around a single charged sphere, the field lines fan straight out in every direction, like spokes on a wheel. That pattern earns its own name, and it comes with a built-in warning about distance.
Three drawings settle what counts as the pattern. Then the name arrives.
The first field's lines are straight and parallel, all pointing one way. They share one direction, and they aim at no central point.
The second field's lines are straight too, but they all aim at one central point. Extended backward, every line passes through the center of the sphere. A straight line from the center out is called a radius. Each of these lines runs along a radius.
The third field's lines also run along radii, this time pointing inward to the central mass. The pattern is the same; only the arrows are reversed.
A field weakens with distance as its lines spread apart from a central charge. Is the field radial?
Now comes the warning. Moving outward from the source, the lines spread apart. Where field lines sit farther apart, the field is weaker. So a radial field weakens with distance from its source.
A field's lines run parallel and evenly spaced, all pointing one way. Is the field radial?
That is the pattern's signature: one central source, straight lines along radii, and a field that weakens as you move away.
A field whose lines lie along radii, toward or away from a central source, is called a ___ field. Type the missing word.
Which description fits a radial field?
Moving away from the central charge of a radial field, what happens to the field's strength?
The drawing shows the field around a small moon. Which pair of facts about this field is correct?