Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 37 · 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: a dry cork is a conductor. (a) True (b) False
2. 2.⚡ What does an electric toy car mainly change electricity into? (a) sound (b) heat (c) light (d) movement
3. 3.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
4. 4.⚡ What does a rice cooker mainly change electricity into? (a) movement (b) heat (c) sound (d) light
5. 5.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) own switch for each bulb (d) a single current path
6. 6.True or false: a school bell mainly makes movement. (a) False (b) True
7. 7.⚡ What does a torch mainly change electricity into? (a) light (b) heat (c) movement (d) sound
8. 8.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
9. 9.🔍 Which is the odd one out? (a) aluminium foil (b) a safety pin (c) a metal paper clip (d) a cotton thread
10. 10.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
11. 11.Which drawing is the symbol for a switch? (a) a circle with a cross (b) a line lifted at a gap (c) many long-short pairs (d) one tall, one short bar
12. 12.🔘 Which kind of switch slides side to side? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a tilt switch
13. 13.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) motor (b) cell (c) ammeter (d) junction
14. 14.Which of these means the circuit is closed? (a) a cell is taken out (b) a wire has come loose (c) a wire is cut (d) the loop is complete
15. 15.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.What does a toggle switch do? (a) flips up or down (b) slides side to side (c) works only while pressed (d) springs back when let go
17. 17.Which of these is safe? (a) climb an electric pole (b) fly a kite near wires (c) touch a fallen wire (d) stay away from pylons
18. 18.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) No (b) Yes
19. 19.Which of these mainly gives out heat? (a) a buzzer (b) a water heater (c) an electric drill (d) a night lamp
20. 20.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
21. 21.Which of these is not safe? (a) keep drinks far away (b) use a cable with cuts (c) build with an adult near (d) use small battery cells
22. 22.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) an insulator (d) a conductor
23. 23.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
24. 24.Which of these is a conductor? (a) a dry cork (b) an iron nail (c) a woollen thread (d) a ceramic cup
25. 25.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
26. 26.⚡ What does an electric kettle mainly change electricity into? (a) heat (b) sound (c) movement (d) light
27. 27.🔍 Which is the odd one out? (a) a siren (b) an exhaust fan (c) a doorbell (d) a school bell
28. 28.True or false: to touch a switch when wet is safe. (a) True (b) False
29. 29.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
30. 30.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
31. 31.Which of these is true of a series circuit? (a) bulbs share the voltage (b) one out, the rest glow (c) many paths for current (d) used in house wiring
32. 32.💡 5 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
33. 33.What does a tilt switch do? (a) springs back when let go (b) works only while pressed (c) closes when tipped over (d) slides side to side
34. 34.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
35. 35.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
36. 36.Which of these is a conductor? (a) a plastic straw (b) a cotton thread (c) a steel coin (d) a rubber band
37. 37.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a short circuit (b) a parallel circuit (c) an open circuit (d) a safe circuit
38. 38.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
39. 39.🔦 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 safety pin. Does the bulb glow? (a) Yes (b) No
40. 40.🔋 4 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =

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