Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 747 · 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.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) voltmeter (b) cell (c) battery (d) ammeter
2. 2.🔘 A bulb and a cell are joined through 6 switches on 6 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
3. 3.True or false: if the switch is OFF, the circuit is open and no current flows. (a) False (b) True
4. 4.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) a cell is taken out (d) all wires are joined
5. 5.True or false: to dry your hands first is safe. (a) False (b) True
6. 6.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
7. 7.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) sound energy (b) light energy (c) chemical energy (d) movement energy
8. 8.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
9. 9.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
10. 10.True or false: a line lifted at a gap is the symbol for a switch. (a) False (b) True
11. 11.True or false: to fly a kite near wires is safe. (a) True (b) False
12. 12.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
13. 13.True or false: a rice cooker mainly makes sound. (a) False (b) True
14. 14.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a wall socket (d) a small battery pack
15. 15.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) wire (b) switch (c) battery (d) capacitor
16. 16.🔍 Which is the odd one out? (a) a rubber band (b) a wooden stick (c) aluminium foil (d) a woollen thread
17. 17.🔍 Which is the odd one out? (a) a copper wire (b) aluminium foil (c) a rubber band (d) an iron nail
18. 18.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
19. 19.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
20. 20.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
21. 21.🔌 Most metals are good … (a) insulators (b) conductors (c) batteries (d) magnets only
22. 22.🔋 What is a battery? (a) a switch with a lid (b) one single wire (c) two or more cells joined (d) a kind of bulb
23. 23.Which of these mainly makes movement? (a) a ceiling fan (b) a room heater (c) a tube light (d) a night lamp
24. 24.🔍 Which is the odd one out? (a) an electric kettle (b) a street light (c) an LED lamp (d) a night lamp
25. 25.🔘 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) Yes (b) No
26. 26.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
27. 27.Which of these is true of a parallel circuit? (a) each gets the full volts (b) bulbs share the voltage (c) one bulb out, all go out (d) a break stops every bulb
28. 28.Which of these is an insulator? (a) a copper wire (b) a paper strip (c) a metal paper clip (d) a safety pin
29. 29.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
30. 30.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) chemical energy (c) sound energy (d) movement energy
31. 31.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) by Wi-Fi (d) not joined
32. 32.🔍 Which is the odd one out? (a) fly kites in open fields (b) open a phone charger (c) dry your hands first (d) keep drinks far away
33. 33.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
34. 34.Which drawing is the symbol for an ammeter? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with A inside (d) a circle with a cross
35. 35.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
36. 36.Which of these is not safe? (a) stay away from pylons (b) take cells out after use (c) open a phone charger (d) use small battery cells
37. 37.🔘 A bulb and a cell are joined through 3 switches on 3 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
38. 38.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a short circuit (b) an open circuit (c) a parallel circuit (d) a safe circuit
39. 39.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
40. 40.Which of these mainly gives out light? (a) an electric iron (b) an LED lamp (c) a buzzer (d) an electric kettle

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