All Flashcards
What are the steps involved in charging by friction?
- Rub two materials together. 2. Electrons transfer from one material to the other. 3. One material becomes negatively charged (gains electrons), and the other becomes positively charged (loses electrons).
What are the steps involved in charging by contact?
- Bring a charged object into contact with a neutral object. 2. Charge transfers from the charged object to the neutral object. 3. Both objects end up with the same sign of charge.
What are the steps involved in charging by induction?
- Bring a charged object near a neutral conductor. 2. Charges within the conductor redistribute (induced charge separation). 3. Ground the conductor to allow charge to flow to or from the Earth. 4. Remove the ground connection. 5. Remove the charged object, leaving the conductor with an opposite charge.
What are the steps to solve the equilibrium of charged spheres suspended by threads?
- Draw a free-body diagram for one sphere. 2. Use trigonometry to find the angle of the thread. 3. Set up and solve the equilibrium equation using the angle and mass. 4. Use Coulomb's law to calculate the charge.
What are the steps to solve the electric force between multiple interacting charged objects?
- Identify all the charged objects. 2. Calculate the electric force between each pair of charged objects using Coulomb's law. 3. Determine the direction of each force (attractive or repulsive). 4. Vectorially add the forces to find the net force on each object.
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).
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).