Electronic quiz

1. Basic electronics quiz
part 2

2. 1.What is the color code for a
220 5% resistor?
A.Red, Red, Brown, Gold
B.Orange, Orange, Black, Gold
C.Red, Red, Black, Gold
D.Red, Red, Brown, Silver

3. • Ans A.Red, Red,
Brown, Gold

4. • 2.If 60 J of energy are available for
every 15 C of charge, what is the
voltage?
• A.4 V
• B.60 V
• C.15 V
• D.0.25 V

5. • Ans A.4 V
• Voltage = energy/charge = 60/15 =
4.

6. 3.An atom's
atomic number
is determined by
the number of:
A.neutrons
minus protons
B.protons C.electrons D.neutrons

7. B.protons
The number of
protons in an
atom is the
atomic number.

8. 4. A voltage will influence current only if the circuit is:
A.open
B.insulated
C.high resistance
D.closed

9. • D.closed
• If the circuit will closed, then only
currrent will flow throughtout the
circuit and by Ohm's law, V = IR.

10. 5. Which resistive component is
designed to be temperature sensitive?
A.Thermistor
B.Rheostat
C.Potentiometer
D.Photoconductive cell

11. Ans
A.Thermistor
the resistor
value depends
on the
temperature

12. • 6. The negative and positive charge
symbols are assigned (in that order)
to the:
• A.proton and electron
• B.electron and proton
• C.atom and nucleus
• D.electron and element

13. • B.electron and proton
• Negative charge
represents electrons
and positive charge
represents protons.

14. 7. Which voltage source converts
chemical energy to electrical energy?
A.Electrical generator
B.Battery
C.Solar cell
D.Electronic power supply

15. • B.Battery

16. 8. If 40 C of charge
flow past a point in
20 s, what is the
current?
A.2 A B.0.5 A C.20 A D.40 A

17. • Ans A.2 A
• Current
=Coloumbs/Time.So,
current = 40/20.Ans =
2A.

18. • 9. How many valence
shell electrons are there
in semiconductor
atoms?
• A.16
• B.8
• C.4
• D.2

19. • Ans C.4
• Yes it is true that semiconductor
have 4 electrons in outer most shell
and conductor have less than 4
electron in the outer most shell an

20. 10. Which unit of charge contains
6.25 × 1018 electrons?
A.An ampere
B.A coulomb
C.A volt
D.A joule

21. ANS A COULOMB 1 COLUMB = 6.25*10^18
ELECTRONS