Electric Charge and Conservation Principles

This video tutorial focuses on solving problems related to electric charge. It begins with calculating the charge of a metal rod after transferring electrons, then moves on to finding the charge of moles of electrons using Avogadro's number. The tutorial also covers calculating the charge of protons from their mass and discusses charge transfer between metal spheres, illustrating the law of conservation of electric charge.

What is the charge of one electron?

• 1.602 x 10^-19 coulombs

• -1.602 x 10^-19 coulombs

• 1.602 x 10^19 coulombs

• -1.602 x 10^19 coulombs

How many electrons are transferred to a neutral metal rod to give it a charge of -7.2 x 10^-16 coulombs?

• 4500 electrons

• 3500 electrons

• 5000 electrons

• 4000 electrons

What is Avogadro's number?

• 6.022 x 10^-23

• 6.022 x 10^-19

• 6.022 x 10^19

• 6.022 x 10^23

What is the total electric charge of 3.6 moles of electrons?

• -347,000.3 coulombs

• 347,000.3 coulombs

• -347,000.3 kilocoulombs

• 347,000.3 kilocoulombs

What is the charge of one proton?

• 1.602 x 10^19 coulombs

• -1.602 x 10^-19 coulombs

• -1.602 x 10^19 coulombs

• 1.602 x 10^-19 coulombs

How is the electric charge of 50 kg of protons calculated?

• By using the volume of protons

• By using the mass of a proton and its charge

• By using the number of moles and Avogadro's number

• By using the charge of an electron

What happens to the charge of two identical metal spheres when they are brought into contact?

• The charges are halved

• The charges are doubled

• The charges are averaged

• The charges remain the same

Which particles are transferred between metal spheres to equalize charge?

• Protons

• Neutrons

• Electrons

• Ions

How much charge is transferred between two metal spheres if one loses 8 microcoulombs?

• 8 microcoulombs

• -8 microcoulombs

• 16 microcoulombs

• -16 microcoulombs

What principle is illustrated by the charge transfer between two metal spheres?

• Law of Conservation of Momentum

• Law of Conservation of Electric Charge

• Law of Conservation of Mass

• Law of Conservation of Energy