Lecture 2 Flashcards
1
Q
What are some common types of resistors?
A
Through-hole, surface mount, wire wound, and carbon film resistors.
2
Q
How are colour-coded resistors typically marked?
A
With 4 or 5 coloured bands to identify resistance value and tolerance.
3
Q
How do you read a 4-band resistor?
A
1st and 2nd bands are numbers, 3rd is multiplier, 4th is tolerance.
4
Q
What is Ohm’s Law?
A
Voltage = Current x Resistance
5
Q
What are the formulas for electric power?
A
P=VI
P=I²R
P=V²/R
6
Q
What are the two main classifications of circuit components?
A
Active components and passive components.
7
Q
What is the difference between AC and DC signals?
A
DC (direct current) signal exhibits only positive or only negative values. AC (alternating current) signal consistently exhibits both positive and negative values.
