Electricity Fundamentals

What is the definition of conventional current?

• The flow of electrons from the positive to the negative terminal.

• The flow of current from the positive to the negative terminal.

• The flow of electrons from the negative to the positive terminal.

• The flow of positive charge from the negative to the positive terminal.

Which statement best explains electron flow?

• Electrons flow from the positive to the negative terminal.

• Electrons flow from the negative to the positive terminal.

• Electrons do not move in a circuit.

• Electrons flow in both directions simultaneously.

Which of the following materials is a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

Which of the following materials is considered an insulator?

• Aluminium

• Silver

• Plastic

• Iron

What does the symbol for a resistor look like in a circuit diagram?

• A rectangle

• A straight line

• A circle

• A triangle

What is the main characteristic of alternating current (AC)?

• It flows in one direction only.

• It changes direction periodically.

• It does not flow at all.

• It flows in a circular path.

Tags

NGSS.MS-PS4-1

What is the main characteristic of direct current (DC)?

• It flows in one direction only.

• It changes direction periodically.

• It does not flow at all.

• It flows in a circular path.

In a circuit diagram, what does the symbol for a battery look like?

• Two parallel lines of different lengths

• A zigzag line

• A circle with a cross inside

• A triangle

Which of the following is true about the direction of conventional current?

• It is the same as the direction of electron flow.

• It is opposite to the direction of electron flow.

• It does not have a direction.

• It flows in a circular path.

Which of the following is a characteristic of conductors?

• They have high resistance to electron flow.

• They allow electrons to flow easily.

• They do not allow electrons to flow at all.

• They are always made of non-metallic materials.

Tags

NGSS.MS-PS1-1