Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 176 · 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: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
2. 2.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) none (d) one for each bulb
3. 3.Which of these gives us electricity? (a) a battery (b) a water pump (c) a computer (d) a television
4. 4.True or false: to keep drinks far away is safe. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a woollen thread (b) a cotton thread (c) a copper wire (d) a plastic ruler
6. 6.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
7. 7.Which of these gives us electricity? (a) a bicycle dynamo (b) a washing machine (c) a television (d) a mobile phone
8. 8.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
9. 9.🔍 Which is the odd one out? (a) open a phone charger (b) throw cells in a fire (c) build with an adult near (d) use a cable with cuts
10. 10.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) battery (b) cell (c) voltmeter (d) bulb
11. 11.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in parallel (c) in series (d) not joined
12. 12.🔍 Which is the odd one out? (a) dry your hands first (b) take cells out after use (c) use small battery cells (d) use mains for a project
13. 13.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
14. 14.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
15. 15.Which of these is safe? (a) take cells out after use (b) poke things in a socket (c) use mains for a project (d) use a cable with cuts
16. 16.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
17. 17.🔦 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 glass marble. Does the bulb glow? (a) No (b) Yes
18. 18.Which of these is not safe? (a) take cells out after use (b) dry your hands first (c) use small battery cells (d) open a phone charger
19. 19.Which of these means the circuit is open? (a) the switch is OFF (b) the switch is ON (c) the loop is complete (d) all wires are joined
20. 20.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
21. 21.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a push button (c) a tilt switch (d) a reed switch
22. 22.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) to save copper only (d) so all go off together
23. 23.What does a push button do? (a) springs back when let go (b) slides side to side (c) stays where you flip it (d) closes near a magnet
24. 24.🔍 Which is the odd one out? (a) poke things in a socket (b) fly kites in open fields (c) use a cable with cuts (d) use mains for a project
25. 25.🔍 Which is the odd one out? (a) a water heater (b) a street light (c) an LED lamp (d) a tube light
26. 26.True or false: a woollen thread is a conductor. (a) True (b) False
27. 27.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a slide switch (c) a push button (d) a toggle switch
28. 28.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 15 V (c) 0.5 V (d) 230 V
29. 29.Which of these is safe? (a) fly a kite near wires (b) poke things in a socket (c) open a phone charger (d) use small battery cells
30. 30.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) LED (c) motor (d) resistor
31. 31.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
32. 32.True or false: a slide switch closes when tipped over. (a) True (b) False
33. 33.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) resistor (b) LED (c) bulb (d) ammeter
34. 34.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) two equal parallel lines (c) a circle with an X in it (d) a circle with M inside
35. 35.Which of these is true of a series circuit? (a) own switch for each bulb (b) a single current path (c) one out, the rest glow (d) many paths for current
36. 36.Which of these is safe? (a) touch a switch when wet (b) stay away from pylons (c) poke things in a socket (d) open a phone charger
37. 37.🔁 What must there be for a current to flow? (a) a broken path (b) one loose end (c) a plastic gap (d) a complete loop
38. 38.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
39. 39.True or false: a metal paper clip is an insulator. (a) False (b) True
40. 40.🔘 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) Yes (b) No

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