How much do you know about basic electricity and electronics?
Here are some questions to get you thinking:
Give yourself the marks shown for each question. This is a self-scoring test. 
Compare the result with a re-try after a few months of the course. 


1. Can a small battery have a larger output current than a large battery?  (1 mark) 


2. If one cell in a 6v battery is turned around the wrong way, what output voltage will result?  (1 mark) 


3. A normal "dry cell" produces 1.5v. Can a cell produce 3v?  (1 mark) 


4. Can two 12v batteries be charged in series with a 12v charger?  (1 mark) 

5. If a 47R 1/4watt resistor and 100R 1/4watt resistor are connected in series and the voltage applied is increased, which resistor will "burn out" first?     (1 mark) 


6. What is the purpose of an electrolytic connected across the power rails?  (1 mark) 


7. If a battery has a capacity of 2amp-hrs, how long will it (theoretically) last at 100mA current drain?  (1 mark) 


8. Name two reasons for using a zero-ohm resistor on a printed circuit board:     (1 mark) 


9. A LED is connected to a 9v supply via a 470R. If the resistance is decreased to 220R, will the LED glow brighter or duller? (1 mark) 


10. Each diode has a voltage drop of 0.7v What is the voltage between points A & B? (1 mark) 

        


11. If the voltage to a lamp is increased, will the current increase or decrease? (1 mark) 


12. In the diagram below:  Name the resistors R_B and R_L: (1 mark) 

      


13. In the circuit above, is the transistor turned ON?   (1 mark) 


14.  What is the value of the resistor:   red   red   gold   gold     (1 mark)


15. Which capacitor is larger:    100n   0.01u    104   (1 mark) 


16. If two resistors are placed in series, does the combined resistance increase or decrease?  (1mark) 


17. Place these resistors in ascending order:    22k    2M2    2k2    22R    2R2  (1 mark) 


18. If two 10k resistors are connected in parallel, what is the combined resistance?     (1 mark) 


19. What is the difference between the following two ceramic capacitors:   101     102  (1 mark) 


20. Place these capacitors in ascending order:    2n2   22p   22n   2p2   (1 mark) 


21. What is the name for a circuit made up of a resistor and capacitor in series?      (1 mark) 


22. What is the value of the following combination:     (1 mark)

    


23. Name the three leads of a common transistor:   (1 mark)


24.  What is the name given to a circuit made up of a coil and capacitor in parallel?  (1 mark) 


25. What is the value of the following resistance:    yellow    purple    yellow    gold   (1 mark) 


26. What voltage is needed on the base of a transistor to turn it ON?      (1 mark) 


27. Does a capacitor pass DC?   (1 mark) 


28.  Name this transistor stage:     (1 mark) 

     


29. Name the gate: (1 mark) 

    


30. Name the circuit:        (1 mark) 

 Write down your score and the date. Compare it with a re-test in one month.