Electric Charge, Law of Charges, and Quantization of Charge

The video tutorial explores the concept of electric charge through demonstrations with balloons and rods. It explains the law of charges, which states that unlike charges attract and like charges repel. The tutorial delves into the nature of charge, discussing electrons and protons, and introduces the concept of elementary charge. It also covers the quantization of charge, emphasizing that charge comes in discrete quantities. The video concludes with practical examples illustrating these principles.

What happens when a rubber balloon is rubbed against a person's head?

• The balloon sticks to the head.

• The balloon becomes positively charged.

• The balloon changes color.

• The balloon loses its charge.

What is the law of charges?

• Charges are always neutral.

• Charges do not interact.

• Unlike charges attract, like charges repel.

• Like charges attract, unlike charges repel.

What causes an object to have an excess negative charge?

• Loss of protons

• Gain of protons

• Loss of electrons

• Gain of electrons

What is the elementary charge?

• 1.60 times 10 to the positive 19 coulombs

• 1.60 times 10 to the negative 19 coulombs

• 1.67 times 10 to the negative 27 kilograms

• 9.11 times 10 to the negative 31 kilograms

Which particle is not an elementary particle?

• Neutron

• Quark

• Proton

• Electron

What are protons composed of?

• Photons

• Quarks

• Neutrons

• Electrons

What happens to hair when a balloon is pulled away after being rubbed against it?

• The hair becomes wet.

• The hair changes color.

• The hair stands on end.

• The hair falls flat.

What is the result of rubbing a glass rod with silk?

• The glass rod becomes negatively charged.

• The glass rod becomes positively charged.

• The glass rod loses its charge.

• The glass rod becomes neutral.

How many excess protons are needed to achieve a charge of 1 Coulomb?

• 6.25 times 10 to the 18th protons

• 1.60 times 10 to the negative 19 protons

• 1.67 times 10 to the negative 27 protons

• 9.11 times 10 to the negative 31 protons

Why can't an object have a charge of 2.00 times 10 to the negative 19 coulombs?

• Charge is always negative.

• Charge is continuous.

• Charge is quantized.

• Charge is always positive.