Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 65 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
2. 2.True or false: a toggle switch closes when tipped over. (a) False (b) True
3. 3.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
4. 4.Which of these means the circuit is open? (a) the bulb is unscrewed (b) the loop is complete (c) all wires are joined (d) the switch is ON
5. 5.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
6. 6.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
7. 7.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
8. 8.True or false: a line lifted at a gap is the symbol for a resistor. (a) False (b) True
9. 9.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) by Wi-Fi (d) in series
10. 10.🔘 A bulb and a cell are joined through 3 switches on 3 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
11. 11.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the loop is complete (d) a wire has come loose
12. 12.🔍 Which is the odd one out? (a) a ceramic cup (b) a safety pin (c) a steel coin (d) a metal paper clip
13. 13.True or false: to dry your hands first is safe. (a) True (b) False
14. 14.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
15. 15.True or false: a table fan mainly gives out light. (a) True (b) False
16. 16.Which of these uses electricity? (a) a computer (b) a solar panel (c) a cell (d) a power station
17. 17.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
18. 18.True or false: a push button works only while pressed. (a) False (b) True
19. 19.✏️ In a circuit diagram, which part is drawn as a straight line? (a) cell (b) wire (c) diode (d) motor
20. 20.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
21. 21.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
22. 22.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a single current path (c) a break stops every bulb (d) many paths for current
23. 23.⚡ What does a night lamp mainly change electricity into? (a) sound (b) light (c) movement (d) heat
24. 24.💡 3 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
25. 25.What does a reed switch do? (a) springs back when let go (b) closes near a magnet (c) slides side to side (d) stays where you flip it
26. 26.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a slide switch (d) a tilt switch
27. 27.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
28. 28.Which of these is not safe? (a) keep drinks far away (b) open a phone charger (c) dry your hands first (d) use small battery cells
29. 29.True or false: a toggle switch closes near a magnet. (a) True (b) False
30. 30.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they all go out (d) they keep glowing
31. 31.Which drawing is the symbol for an ammeter? (a) a circle with an X in it (b) a circle with V inside (c) many long-short pairs (d) a circle with A inside
32. 32.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
33. 33.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) bury them in soil (d) throw them in a fire
34. 34.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) an open circuit (c) a full circuit (d) a series circuit
35. 35.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
36. 36.Which of these is safe? (a) fly kites in open fields (b) open a phone charger (c) climb an electric pole (d) use a cable with cuts
37. 37.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
38. 38.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
39. 39.True or false: if a wire has come loose, the circuit is open and no current flows. (a) True (b) False
40. 40.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)

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