Question

STATIC ELECTRICITY CONCEPT HOMEWORK (1) When two materials are rubbed together, do they acquire the same charge (both positive) or opposite charges (one positive and one negative)? Explain why using our model of electric charge. (2) I bring an Acrylic Rod with negative charges next to (but not touching) a metal ball. A wire is attached from the ball to another big metal object like a filing cabinet or the pipes in the plumbing, Metal • What will happen to the charges on the metal ball as the rod is brought near? • What will happen if we disconnect the wire while the charges are still moved out of place? (3) Give three examples of static electric interactions from everyday life.

Answer 1

- (1) when two materials are subbed together. They will agure a two opposite type of charges. One material will aquure positive charge and the other material will aqure negetine charge. Because in the process of Rubting one ma electrons from one material is transfarred to the other body. As the rod is near the ball. The ball will induced to positive charges on the side near the rod and negetive charges on the opposite side. Now The negetive charges on the ball is free charge So when the ball is connected to another big metal obect then the negetive charge will transfared to the metal obect and the metal will be positivly charged body. If we discomect the wire then the ball will be a sacustod electrically neutral body.