Charge Interactions and Properties of Conductors and Insulators

What does it mean for charge to be conserved?

• Charge can be created or destroyed.

• Charge remains constant in a closed system.

• Charge can change depending on the environment.

• Charge is always positive.

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What type of force is the electric force?

• Contact force

• Non-contact force

• Gravitational force

• Tension force

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What happens when two objects with like charges are brought close to each other?

• They have no interaction.

• They neutralize each other.

• They repel each other.

• They attract each other.

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According to Newton's third law, what happens when two charged objects interact?

• They exert forces of the same magnitude but in opposite directions.

• They exert forces of different magnitudes on each other.

• They only exert forces if they are of opposite charges.

• They cancel each other's forces out.

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If a neutral object is attracted to both a negatively charged rod and a positively charged rod, what can be concluded about the object?

• The object is neutral.

• The object is negatively charged.

• The object has no charge.

• The object is positively charged.

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What does the law of conservation of charge state?

• Charge can be created or destroyed.

• The total charge in a closed system remains constant.

• Charge can only be positive.

• Charge can only be negative.

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Why does a plastic strip become positively charged when rubbed with cotton?

• It acquires extra protons.

• It loses electrons.

• It gains electrons.

• Protons are created.

What is a characteristic of conductors?

• They cannot conduct electricity.

• They allow electrons to move freely.

• They do not allow electrons to move freely.

• They are always insulators.

What happens to the charge on an insulator?

• It spreads out evenly.

• It remains in the same location.

• It moves to the nearest conductor.

• It disappears.

Why do charges distribute evenly on a conductor?

• To create a uniform electric field.

• To minimize the repulsive force between electrons.

• To neutralize the conductor.

• To maximize the repulsive force between electrons.