An Uncharged Metal Sphere Is Placed on an Insulating Puck

question 23

Multiple Choice

An uncharged metal sphere is placed on an insulating puck on a frictionless table. While being held parallel to the table, a rod with a charge q is brought close to the sphere, but does not touch it. As the rod is brought in, the sphere

• A) remains at rest.
• B) moves toward the rod.
• C) moves away from the rod.
• D) moves perpendicular to the velocity vector of the rod.
• E) moves upward off the puck.

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