Topic 2: Basic AC & DC

"A voltage whose polarity never reverses" , refers to which type of current?

• Straight current (SC)

• Alternating current (AC)

• Up & down current (UDC)

• Direct current (DC)

In which direction does a current flow in a DC circuit?

• from top to bottom

• from the positive pole (+) to the negative pole (-)

• from left to right

• from the negative pole (-) to the positive pole (+)

"The flow of current that periodically reverses", refers to which type of current?

• Alternating current (AC)

• Straight current (SC)

• Up & down current (UDC)

• Direct current (DC)

Which of the following terms is NOT associated with Alternating Current (AC)?

• Root-Mean-Square-Voltage (Vrms)

• Peak-to-Peak-Voltage (Vp-p)

• Peak-Voltage (Vp)

• Peak-to-Bottom-Voltage (Vp-b)

The unit of current is?

• Amphere

• Ohms

• Volt

• Decibel

Which of the following diagram shows a Direct Current flow?

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