Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 208 · 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.Which of these uses electricity? (a) a mobile phone (b) a cell (c) a solar panel (d) a battery
2. 2.Which of these is not safe? (a) stop if a part gets hot (b) climb an electric pole (c) take cells out after use (d) build with an adult near
3. 3.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
4. 4.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a slide switch (c) a push button (d) a reed switch
5. 5.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
6. 6.True or false: “a single current path” is true of a series circuit. (a) False (b) True
7. 7.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
8. 8.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
9. 9.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
10. 10.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) none (d) one for each bulb
11. 11.Which of these mainly gives out heat? (a) a tube light (b) a buzzer (c) a toaster (d) an exhaust fan
12. 12.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
13. 13.True or false: a metal paper clip is a conductor. (a) True (b) False
14. 14.💡 5 identical bulbs are joined in series with a 15 V battery (ideal wires). How many volts does each bulb get? =
15. 15.True or false: a table fan mainly gives out light. (a) False (b) True
16. 16.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) wire (b) LED (c) cell (d) battery
17. 17.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) in parallel (d) not joined
18. 18.🔍 Which is the odd one out? (a) a doorbell (b) a table fan (c) a loudspeaker (d) a buzzer
19. 19.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
20. 20.⚡ What does a toaster mainly change electricity into? (a) sound (b) movement (c) light (d) heat
21. 21.True or false: a school bell mainly gives out light. (a) True (b) False
22. 22.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) no voltage (c) half the voltage (d) the same voltage
23. 23.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
24. 24.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a tilt switch (c) a push button (d) a reed switch
25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) Yes (b) No
26. 26.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
27. 27.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
28. 28.Which of these mainly gives out heat? (a) a room heater (b) a table fan (c) a school bell (d) a doorbell
29. 29.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a slide switch (c) a tilt switch (d) a reed switch
30. 30.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
31. 31.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the base (c) the switch (d) the glass
32. 32.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
33. 33.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
34. 34.🔍 Which is the odd one out? (a) a paper strip (b) a brass key (c) a cotton thread (d) a glass marble
35. 35.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the plastic handle (c) the bare end (d) the steel shaft
36. 36.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
37. 37.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
38. 38.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) battery (b) capacitor (c) junction (d) switch
39. 39.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a series circuit (c) a closed circuit (d) an open circuit
40. 40.🔋 3 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =

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