Physics Lesson 3 (01/13/24)

Which of the following best describes the process of charge induction in an electroscope?

• Direct contact with a charged object transfers charge to the electroscope.

• A charged object brought near the electroscope causes a redistribution of charges within the electroscope.

• The electroscope is grounded to allow charge to flow into it.

• The electroscope is rubbed with a charged material to transfer charge.

Explain how a Van de Graaff generator functions to create a high voltage.

• It uses chemical reactions to generate charge.

• It uses a moving belt to transfer charge to a metal dome.

• It relies on magnetic fields to induce charge.

• It uses solar energy to generate charge.

Describe the role of conduction in the transfer of charge between a rod and fur.

• Charge is transferred through direct contact between the rod and fur.

• Charge is transferred through the air without contact.

• Charge is transferred by grounding the rod.

• Charge is transferred by rubbing the rod with silk.

How does polarization occur when a balloon is rubbed with silk?

• Electrons are transferred from the balloon to the silk.

• The balloon becomes positively charged, and the silk becomes negatively charged.

• The charges within the balloon rearrange, causing one side to be more negatively charged.

• The balloon and silk both become neutral.

What is the primary electrostatic principle involved in induction?

• Like charges attract, and opposite charges repel.

• Charges can be transferred through direct contact.

• A charged object can cause a redistribution of charges in a nearby neutral object.

• Charges are always conserved in a closed system.

Strategically plan an experiment using an electroscope to demonstrate charge induction. What steps would you include?

• Rub the electroscope with a charged rod and observe the leaves.

• Bring a charged rod near the electroscope without touching it and observe the leaves.

• Ground the electroscope and then bring a charged rod near it.

• Submerge the electroscope in water and observe the leaves.

Which of the following best explains the conservation of charge during conduction?

• Charge is created during the process.

• Charge is destroyed during the process.

• The total charge before and after conduction remains the same.

• Charge is transferred to the air.

Analyze the effect of using different materials, such as fur and silk, on the charge transfer process. What would you expect?

• Both materials will transfer the same amount of charge.

• Fur will transfer more charge than silk.

• Silk will transfer more charge than fur.

• Neither material will transfer any charge.

What happens to the charges in a neutral object when a charged object is brought near it, without touching?

• The neutral object becomes charged.

• The charges in the neutral object rearrange, causing polarization.

• The neutral object remains unchanged.

• The neutral object loses electrons.

Evaluate the effectiveness of a Van de Graaff generator in demonstrating electrostatic principles. What factors would you consider?

• The size of the generator.

• The speed of the belt.

• The material of the dome.

• All of the above.