Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 162 · 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.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
2. 2.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
3. 3.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) LED (c) motor (d) wire
4. 4.Which of these gives us electricity? (a) an air conditioner (b) a washing machine (c) a water pump (d) a bicycle dynamo
5. 5.🔁 Is the circuit closed or open if a cell is taken out? (a) open (b) closed
6. 6.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
7. 7.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) an electric drill (b) a doorbell (c) an electric toy car (d) an exhaust fan
9. 9.Which of these is not safe? (a) stop if a part gets hot (b) build with an adult near (c) touch a fallen wire (d) take cells out after use
10. 10.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
11. 11.True or false: a torch mainly makes movement. (a) True (b) False
12. 12.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a series circuit (c) a full circuit (d) an open circuit
13. 13.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
14. 14.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
15. 15.🔋 A 12 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
16. 16.Which of these mainly gives out light? (a) a mixer grinder (b) a night lamp (c) a siren (d) a ceiling fan
17. 17.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) False (b) True
18. 18.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic is a conductor (c) to make them heavy (d) plastic makes current
19. 19.True or false: a circle with an X in it is the symbol for a cell. (a) True (b) False
20. 20.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
21. 21.⚡ A cell changes stored chemical energy into which kind of energy? (a) wind energy (b) sound energy (c) nuclear energy (d) electrical energy
22. 22.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
23. 23.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
25. 25.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
26. 26.⚡ What does a room heater mainly change electricity into? (a) sound (b) movement (c) heat (d) light
27. 27.Which drawing is the symbol for a motor? (a) a circle with A inside (b) a circle with V inside (c) a circle with M inside (d) a circle with an X in it
28. 28.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
29. 29.Which of these means the circuit is closed? (a) the switch is OFF (b) a wire is cut (c) the loop is complete (d) a wire has come loose
30. 30.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
31. 31.Which drawing is the symbol for a diode? (a) a straight line (b) triangle, bar and arrows (c) a circle with an X in it (d) triangle against a bar
32. 32.What does a push button do? (a) closes when tipped over (b) slides side to side (c) closes near a magnet (d) springs back when let go
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 OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
34. 34.🔦 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 rubber eraser. Does the bulb glow? (a) No (b) Yes
35. 35.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one out, the rest glow (d) one bulb out, all go out
36. 36.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) a wall socket (c) an inverter socket (d) a small battery pack
37. 37.🔋 6 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
38. 38.True or false: a small empty box is the symbol for a wire. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) poke things in a socket (b) touch a switch when wet (c) throw cells in a fire (d) use small battery cells
40. 40.⚡ What does an electric iron mainly change electricity into? (a) movement (b) light (c) sound (d) heat

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