A1 LT10 Flashcards
1
Q
What is a resistor?
A
An electrical component that introduces resistance into a circuit.
2
Q
What indicates the ohmic value on a resistor?
A
Colour bands
3
Q
How are resistors rated?
A
According to resistance value and wattage.
4
Q
What is an example of a variable resistor?
A
Volume control of an amplifier
5
Q
Why are resistors deliberately placed in circuits?
A
To limit current, provide a change in voltage, or produce heat.
6
Q
What happens to the physical dimensions of a resistor as its watt rating increases?
A
Increases.
7
Q
How are colour-coded resistors identified?
A
By colour bands
8
Q
What do many colour-coded resistors have in addition to their colour bands?
A
Tolerance rating
