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What are the types of electric currents?

• AA/CC

• AC/DC

• CC/DC

• CA/DC

What is an alternating current? (AC)

• It`s like a back-and-forth or oscillating flow of charge, similar to the ebb and flow of the tides in the ocean.

• This is like a steady and unidirectional flow of charge, similar to a river with a constant, one-way current.

What is a direct current? (DC)

• AC is like a back-and-forth or oscillating flow of charge, similar to the ebb and flow of the tides in the ocean.

• This is like a steady and unidirectional flow of charge, similar to a river with a constant, one-way current.

What electronic component allows current to flow in one direction only?

• Resistor

• LED

• Diode

• Switch

Glass is a good conductor.

• True
• False

Electrons have a positive charge.

• True
• False

Current is measured in:

• volts
• amperes
• ohms
• watts

Resistance is measured in:

• volts
• amps
• ohms
• watts

Which of these is NOT a requirement for a simple circuit?

• Voltage
• Load
• Conductor
• Light

What is the name of the following component?

• resistor
• light dependent resistor
• variable resistor
• thermistor