Technology 3 ESO – Unit 5 ELECTRONICS extra activities
1 – Watch the video on “How to Read a Resistor” and answer:
- a) What indicate the first and second bands?
- b) What indicates the third band?
- c) What indicates the fourth band?
- d) How do we know the reading direction?
- e) What is the value of a resistor that reads: brown, white, red, silver?
- f) What should be the colour bands of a 250 Ω resistor?
2 – Watch the video on “Basic Electronic components | How to and why to use electronics” and answer:
- a) How does a resistor work?
- b) In first angle projection, in what direction do we roll the object?
- c) Why sometimes we put a resistor in the same circuit than an LED?
- d) Draw the symbols of the resistor, the potentiometers and the switches.
- e) Looking at the graph of the resistor:
- What happens to the current if the voltage goes up?
- When should we use a high resistance resistor?
- f) How can we use the potentiometer as a variable resistor?
- g) What electronic component can we use to control audio equipment?
- h) What is the use of switches?