Lecture 1

Question 1

What are the main differences between electrical and electronic circuits?

Answer 1

Electrical - high voltage/current, no decision-making ability
Electronic - low voltage, printed circuit boards

Question 2

How do analogue and digital circuits differ?

Answer 2

Analogue - operate on continuously variable signals
Digital - operate on discretely variable signals (0 and 1)

Question 3

What is electric charge and how is it measured?

Answer 3

Electric charge is the basis for all electrical phenomena and is measured in Coulombs (C).

Question 4

Define electric current and its units of measurement.

Answer 4

Stream of charged particles moving through a conductor and is measured in Amperes (A).

Question 5

What is voltage and how is it measured?

Answer 5

Work/energy required to move a unit charge in a conductor and is measured in volts (V).

Question 6

How is electric power calculated and what is its unit?

Answer 6

Power(watts, W) = Voltage(volts, V) x Current(amperes, A) - P=VI

Question 7

State the power conservation principle

Answer 7

In any electric circuit, the sum of absorbed/consumed power is equal to the sum of generated/delivered powerd at each instance of time.