Chapter 2 - Basic AC & DC

What are the 2 types of current flowing through a conductor or semiconductor materials?

• AC and DC
• AC and AC
• DC and DC
• Conductive materials only

Current can flow in a/an

• Insulator
• Conductor
• Both insulator and conductor
• Semi-conductive materials only

The formula for Ohm s law is

• Current(I) = Voltage(V) x resistance (R)
• Voltage(V) = Current(I) ÷ Resistance (R)
• Voltage(V) = Current(I) x Resistance (R)
• Resistance (R) = Current(I) x Voltage(V)

Alternating current (AC) periodically reverses between

• Positive and neutral
• Positive and positive alternation
• Negative and negative alternation
• Positive alternation and negative alternation

One full cycle of an alternating current (AC) is equal to

• 90 degrees
• 180 degrees
• 360degrees
• 270 degrees

Vp x .707 is the equation for

• Vrms
• Vavg
• Vpeak
• Vinstant

Amplitude & Frequency refers to the

• Analog signals and digital signals respectively

• Digital signals and analog signals respectively

• Strength of a signal and number of cycles respectively

• Strength of a signal and number of cycles respectively

Transmitted signals that are represented as discrete pulses(Steps) is term as

• Digital signals

• Ultra signals

• Analog signals

• Medium signals

Most electronic devices and communication networks use.

• DC Signaling

• AC signaling

• Analog signaling

• Digital signaling

When a signal is represented by either 1 or 0 it is termed as

• Digital signal

• Analog signal

• Direct current signal

• Alternating current signal