Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 241 · 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.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pour water on them (b) wait and watch (c) pull them by the hand (d) shout for an adult
2. 2.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
3. 3.True or false: a water heater mainly gives out heat. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) an iron nail (d) a wooden stick
5. 5.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) nobody (c) a younger child (d) a trusted adult
6. 6.🔘 Which kind of switch works only while pressed? (a) a tilt switch (b) a slide switch (c) a push button (d) a reed switch
7. 7.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
8. 8.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
9. 9.Which of these is not safe? (a) use small battery cells (b) stay away from pylons (c) take cells out after use (d) climb an electric pole
10. 10.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
11. 11.🔋 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)? =
12. 12.True or false: a ceramic cup is an insulator. (a) True (b) False
13. 13.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) the bulb is unscrewed (d) all wires are joined
14. 14.True or false: a wooden stick is a conductor. (a) False (b) True
15. 15.True or false: a circle with V inside is the symbol for a switch. (a) True (b) False
16. 16.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
17. 17.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) battery (c) diode (d) voltmeter
18. 18.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) to make them heavy (d) plastic is an insulator
19. 19.True or false: an electric iron mainly gives out heat. (a) False (b) True
20. 20.🔋 Does a wind turbine give electricity or use electricity? (a) uses electricity (b) gives electricity
21. 21.🔍 Which is the odd one out? (a) a room heater (b) an electric iron (c) a tube light (d) a water heater
22. 22.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) battery (b) resistor (c) cell (d) ammeter
23. 23.What does a toggle switch do? (a) flips up or down (b) works only while pressed (c) closes when tipped over (d) slides side to side
24. 24.🔦 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 graphite rod. Does the bulb glow? (a) Yes (b) No
25. 25.Which of these is true of a series circuit? (a) each gets the full volts (b) one out, the rest glow (c) own switch for each bulb (d) bulbs share the voltage
26. 26.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a push button (c) a slide switch (d) a tilt switch
27. 27.True or false: to dry your hands first is safe. (a) True (b) False
28. 28.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
29. 29.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
30. 30.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
31. 31.Which of these mainly gives out light? (a) a mixer grinder (b) a siren (c) an electric kettle (d) a tube light
32. 32.🔍 Which is the odd one out? (a) a mixer grinder (b) an electric iron (c) an electric toy car (d) an electric drill
33. 33.True or false: a graphite rod is an insulator. (a) False (b) True
34. 34.🔋 2 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)? =
35. 35.Which of these is safe? (a) use small battery cells (b) climb an electric pole (c) touch a fallen wire (d) use a cable with cuts
36. 36.🔍 Which is the odd one out? (a) a ceramic cup (b) a glass marble (c) a rubber band (d) a copper wire
37. 37.Which of these is an insulator? (a) a graphite rod (b) a glass marble (c) a steel spoon (d) a safety pin
38. 38.🔘 When a switch is ON, the circuit is … (a) cut (b) closed (c) open (d) broken
39. 39.True or false: a tilt switch closes when tipped over. (a) True (b) False
40. 40.True or false: to stay away from pylons is safe. (a) False (b) True

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