Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 946 · 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.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
2. 2.Which of these mainly gives out heat? (a) a rice cooker (b) a doorbell (c) a torch (d) an LED lamp
3. 3.What does a toggle switch do? (a) works only while pressed (b) closes when tipped over (c) flips up or down (d) springs back when let go
4. 4.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
5. 5.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) resistor (b) ammeter (c) battery (d) wire
6. 6.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
7. 7.Which of these uses electricity? (a) a battery (b) a power station (c) a computer (d) a wind turbine
8. 8.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the longer line (c) both lines (d) the shorter line
9. 9.💡 2 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. How many bulbs glow?
10. 10.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) capacitor (b) cell (c) battery (d) resistor
11. 11.True or false: a toggle switch stays where you flip it. (a) False (b) True
12. 12.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
13. 13.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a cotton thread. Does the bulb glow? (a) Yes (b) No
14. 14.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
15. 15.🔘 When a switch is ON, the circuit is … (a) closed (b) broken (c) cut (d) open
16. 16.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
17. 17.Which of these is safe? (a) fly kites in open fields (b) fly a kite near wires (c) touch a fallen wire (d) use a cable with cuts
18. 18.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
19. 19.Which of these means the circuit is open? (a) the switch is OFF (b) the loop is complete (c) the switch is ON (d) all wires are joined
20. 20.True or false: to keep drinks far away is safe. (a) True (b) False
21. 21.Which of these gives us electricity? (a) a refrigerator (b) a television (c) a washing machine (d) a wind turbine
22. 22.💡 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
23. 23.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
24. 24.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) none (c) only one (d) both of them
25. 25.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a tilt switch (c) a push button (d) a toggle switch
26. 26.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
27. 27.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) Yes (b) No
28. 28.True or false: “used in house wiring” is true of a parallel circuit. (a) False (b) True
29. 29.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
30. 30.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a circle with M inside (c) a small empty box (d) triangle, bar and arrows
31. 31.True or false: an iron nail is an insulator. (a) False (b) True
32. 32.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a wooden stick. Does the bulb glow? (a) Yes (b) No
33. 33.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
34. 34.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
35. 35.🔋 6 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)? =
36. 36.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a reed switch (c) a tilt switch (d) a push button
37. 37.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
38. 38.Which of these is safe? (a) use a cable with cuts (b) touch a fallen wire (c) touch a switch when wet (d) build with an adult near
39. 39.True or false: if all wires are joined, the circuit is open and no current flows. (a) True (b) False
40. 40.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids