Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 511 · 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: to use mains for a project is not safe. (a) False (b) True
2. 2.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) voltmeter (b) capacitor (c) ammeter (d) cell
3. 3.True or false: a glass marble is a conductor. (a) True (b) False
4. 4.Which of these mainly gives out heat? (a) a street light (b) a doorbell (c) an electric iron (d) a ceiling fan
5. 5.True or false: a toaster mainly gives out heat. (a) False (b) True
6. 6.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
7. 7.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) voltmeter (c) junction (d) LED
8. 8.🔘 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
9. 9.Which of these is a conductor? (a) a dry cork (b) a ceramic cup (c) a safety pin (d) a rubber band
10. 10.True or false: a circle with an X in it is the symbol for a bulb. (a) False (b) True
11. 11.🔌 Is a woollen thread a conductor or an insulator? (a) a conductor (b) an insulator
12. 12.Which of these mainly gives out light? (a) a school bell (b) a street light (c) a room heater (d) a mixer grinder
13. 13.🔍 Which is the odd one out? (a) a brass key (b) a dry cork (c) a wooden stick (d) a rubber band
14. 14.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
15. 15.🔋 4 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)? =
16. 16.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
17. 17.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
18. 18.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) no voltage (c) double the voltage (d) half the voltage
19. 19.Which of these is true of a parallel circuit? (a) one out, the rest glow (b) bulbs share the voltage (c) a single current path (d) a break stops every bulb
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) No (b) Yes
21. 21.🔍 Which is the odd one out? (a) dry your hands first (b) fly kites in open fields (c) poke things in a socket (d) take cells out after use
22. 22.🔍 Which is the odd one out? (a) a siren (b) a water heater (c) a room heater (d) an electric iron
23. 23.True or false: a tilt switch slides side to side. (a) True (b) False
24. 24.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) one (c) two (d) none
25. 25.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic is a conductor (d) plastic makes current
26. 26.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
27. 27.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
28. 28.Which of these is a conductor? (a) a woollen thread (b) a copper wire (c) a rubber band (d) a plastic ruler
29. 29.🔍 Which is the odd one out? (a) a plastic straw (b) a ceramic cup (c) a plastic ruler (d) a steel spoon
30. 30.Which of these mainly gives out heat? (a) a buzzer (b) an electric drill (c) a room heater (d) an LED lamp
31. 31.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
32. 32.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) a plastic gap (d) one loose end
33. 33.True or false: an electric drill mainly gives out heat. (a) True (b) False
34. 34.Which of these is safe? (a) fly a kite near wires (b) stay away from pylons (c) open a phone charger (d) throw cells in a fire
35. 35.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
36. 36.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
37. 37.💡 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 1 is taken out of its holder. How many bulbs glow?
38. 38.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) glass (d) rubber
39. 39.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
40. 40.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes

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