Charging and Induction Concepts

The video tutorial explains three methods of charging objects: by friction, contact, and induction. Charging by friction involves transferring electrons by rubbing objects, like a balloon and a shirt. Charging by contact is demonstrated using a Van de Graaff generator, where electrons are transferred through direct touch, causing sparks. Charging by induction involves polarizing an object and removing excess electrons, as shown with an electroscope. The tutorial emphasizes the law of conservation of charge and the concept of grounding.

What happens to the balloon when it is rubbed against a shirt?

• It loses protons.

• It becomes negatively charged.

• It becomes positively charged.

• It remains neutral.

Which law explains that the net charge remains zero after transferring electrons?

• Law of Conservation of Mass

• Law of Conservation of Energy

• Law of Conservation of Charge

• Law of Conservation of Momentum

What is the primary function of a Van de Graaff generator?

• To produce sound waves

• To generate heat

• To transfer electrons to a metal sphere

• To create magnetic fields

What causes a spark when touching a charged Van de Graaff generator?

• Electrons jumping

• Neutrons jumping

• Atoms jumping

• Protons jumping

How can multiple people become charged using a Van de Graaff generator?

• By holding hands and touching the generator

• By standing on a metal plate

• By using a wooden stick

• By wearing rubber gloves

What is the process called when electrons move quickly and cause a shock?

• Induction

• Grounding

• Polarization

• Spark

What is the role of an electroscope in charging by induction?

• To create a magnetic field

• To measure temperature

• To produce sound

• To detect electric charge

What happens to the leaves of an electroscope when a charged object is brought near?

• They remain stationary

• They repel each other

• They attract each other

• They change color

What is the term for removing excess electrons from an object?

• Charging

• Grounding

• Insulating

• Polarization

What is the first step in charging an object by induction?

• Heating the object

• Polarizing the object

• Cooling the object

• Grounding the object