Formative 1.4 Charge and Current

Where does positive charge reside?

• In the electrons

• In the protons

• In the nuclei of atoms

• In the neutrons

What is the charge of one electron?

• 1.6 x 10^-19 C

• 1.6 x 10^-18 C

• 6.25 x 10^18 C

• 6.25 x 10^-19 C

What does the term "atom" mean?

• Divisible

• Indivisible

• Neutral

• Charged

What is produced when charges move?

• A magnetic field

• A current

• A static charge

• A chemical reaction

What is necessary to produce an electrical current?

• Electrons must move randomly

• Electrons must move in a specific direction

• Protons must move in a specific direction

• Neutrons must move randomly

What does a large current imply?

• Few electrons flow toward the positive

• A lot of electrons flow toward the positive

• Electrons flow toward the negative

• Protons flow toward the positive

What defines whether a material is a conductor or an insulator?

• The color of the material

• The density of the material

• How easily electrons can flow in the material

• The weight of the material

Who postulated the two kinds of charges, positive and negative?

• Isaac Newton

• Albert Einstein

• Benjamin Franklin

• Nikola Tesla

What is the main idea behind using the flow of electrons to define current in a circuit?

• It is more accurate

• It is easier for students to imagine

• It is a new scientific discovery

• It is a historical convention

What is the effect of assuming conventional current flows from + to - or electron current flows in the opposite direction?

• The effect is different

• The effect is the same

• The effect is unknown

• The effect is negligible