All Flashcards
What are the differences between charging by contact and charging by induction?
Contact: Requires direct touch, transfers charge | Induction: No direct touch, causes charge separation and may require grounding.
Compare and contrast conductors and insulators in the context of charging.
Conductors: Allow charges to move freely | Insulators: Resist the movement of charges.
What are the key differences between attraction and repulsion in electrostatics?
Attraction: Occurs between opposite charges | Repulsion: Occurs between like charges.
What are the differences between charging by friction and induced charge separation?
Friction: Requires rubbing and direct contact, results in net charge on both objects | Induced Charge Separation: No direct contact, results in temporary charge polarization without a net charge.
Compare the effects of grounding a positively charged object versus a negatively charged object.
Positively Charged: Electrons flow from the ground to the object, neutralizing it | Negatively Charged: Electrons flow from the object to the ground, neutralizing it.
What is the effect of rubbing a balloon on hair?
Electrons transfer from hair to the balloon, making the balloon negatively charged and the hair positively charged.
What happens when a charged rod touches a neutral metal sphere?
Charge is transferred, and the sphere acquires the same type of charge as the rod.
What is the effect of bringing a positively charged object near a neutral conductor?
Negative charges in the conductor move toward the charged object, and positive charges move away, resulting in charge separation.
What happens when you ground a negatively charged object?
Excess electrons flow from the object to the Earth, neutralizing the object.
What is the effect of increasing the distance between two charged objects?
The electrostatic force between them decreases (inversely proportional to the square of the distance, according to Coulomb's Law).
What is the effect of rubbing a balloon on hair?
The balloon becomes negatively charged (gains electrons), and the hair becomes positively charged (loses electrons).
What is the effect of touching a charged object to a neutral object?
Charge transfers from the charged object to the neutral object, resulting in both objects having the same type of charge.
What is the effect of bringing a charged object near a neutral conductor?
Charges within the conductor redistribute, creating a polarized object (induced charge separation).
What is the effect of grounding a charged object?
Excess charge flows to or from the Earth until the object becomes neutral.
What is the effect of increasing the distance between two charged objects?
The electrostatic force between them decreases (inversely proportional to the square of the distance, according to Coulomb's Law).