Exam: 02.03 Electrical Charges

Student Name: MARIA CABALLERO

Warning

Question 1(Multiple Choice Worth 2 points)

(02.03 MC) The flow of electrical current is possible because electrons are

able to move from one atom to another; the atom that loses an electron becomes positively charged and the atom that gains an electron becomes negatively charged

charged particles that move freely between all atoms; when an atom loses an electron it becomes negatively charged

negatively charged and can move between atoms; the atom that loses an electron becomes negatively charged and the atom that gains an electron becomes positively charged

positively charged particles that when transferred between different atoms create ions that are positively charged

Question 2(Multiple Choice Worth 2 points)

(02.03 MC) Which statement is correct?

When a positively charged atom loses an electron to a positively charged atom, two neutral atoms are created. When a neutral atom loses an electron to another neutral atom, two charged atoms are created. When a neutral atom loses an electron to a positively charged atom, both atoms become neutral. When charged atoms lose electrons they will become positively charged atoms.

Question 3(Multiple Choice Worth 2 points)

(02.03 MC) You need the electricity in a battery to transfer to a light bulb. You should select a material that has the ability to

resist electron flow accept neutron flow resist proton flow accept electron flow

Question 4(Multiple Choice Worth 2 points)

(02.03 LC) Which statement represents how charges interact?

Negative charges are attracted to negative charges. Neutral charges are attracted to neutral charges. Opposite charges are not attracted to each other. Positive charges are attracted to negative charges.

Question 5(Multiple Choice Worth 2 points)

(02.03 LC) Which of the following accurately describes a property of an insulator?

An insulator will inhibit the flow of neutrons. An insulator will inhibit the flow of electrons. An insulator will allow the flow of neutrons. An insulator will allow the flow of electrons.

Question 6(Multiple Choice Worth 2 points)

(02.03 LC) Semi-conductors can best be described as materials that

are able to resist electron flow act as good conductors of electricity have negatively charged atoms have insulator and conductor properties

Question 7(Multiple Choice Worth 2 points)

(02.03 LC) All ions are atoms with a

positive charge negative charge charge neutral charge

Question 8(Multiple Choice Worth 2 points)

(02.03 LC) Which of the following accurately describes what makes a material a good conductor?

It must resist neutron flow. It must readily accept electron flow. It must readily accept neutron flow. It must resist electron flow.

Question 9(Multiple Choice Worth 2 points)

(02.03 LC) This material resists the flow of electrons but will allow some electrons to flow.

Conductor Insulator Semi-insulator Semi-conductor

Question 10(Multiple Choice Worth 2 points)

(02.03 LC) Which statement best describes resistance? Resistance is

how well a current will flow in a material and is measured in volts

how well a material conducts an electrical charge and is measured in ohms

the ability of a material to attract a positive charge to create a current

the ability of a material to repel neutral charges and is measured in ohms