Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 881 · 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: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
2. 2.Which of these uses electricity? (a) a cell (b) a power station (c) a wind turbine (d) a computer
3. 3.🔦 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 wooden stick. Does the bulb glow? (a) No (b) Yes
4. 4.True or false: a long and a short line is the symbol for a cell. (a) False (b) True
5. 5.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) cell (c) battery (d) junction
6. 6.Which drawing is the symbol for a switch? (a) a plain rectangle (b) a line lifted at a gap (c) a circle with A inside (d) a circle with M inside
7. 7.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
8. 8.💡 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
9. 9.🔍 Which is the odd one out? (a) a copper wire (b) a plastic ruler (c) a metal paper clip (d) a steel spoon
10. 10.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
11. 11.🔍 Which is the odd one out? (a) a traffic signal (b) a mixer grinder (c) a torch (d) a street light
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) Yes (b) No
13. 13.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
14. 14.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) friction (c) a magnet (d) sound
15. 15.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
16. 16.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
17. 17.True or false: a rubber band is an insulator. (a) True (b) False
18. 18.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) wind energy (c) sound energy (d) nuclear energy
19. 19.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
20. 20.🔦 A circuit has a used-up (dead) 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 steel spoon. Does the bulb glow? (a) No (b) Yes
21. 21.Which of these is true of a series circuit? (a) a single current path (b) one out, the rest glow (c) each gets the full volts (d) own switch for each bulb
22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) Yes (b) No
23. 23.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a younger child (c) nobody (d) a trusted adult
24. 24.✏️ 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
25. 25.Which of these uses electricity? (a) a generator (b) a solar panel (c) an air conditioner (d) a wind turbine
26. 26.True or false: “many paths for current” is true of a parallel circuit. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) an exhaust fan (b) a table fan (c) a mixer grinder (d) a school bell
28. 28.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
29. 29.Which of these is a conductor? (a) a rubber band (b) an iron nail (c) a wooden stick (d) a plastic ruler
30. 30.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
31. 31.🔍 Which is the odd one out? (a) use a cable with cuts (b) use small battery cells (c) climb an electric pole (d) open a phone charger
32. 32.🔍 Which is the odd one out? (a) an electric drill (b) a table fan (c) an LED lamp (d) a ceiling fan
33. 33.💡 5 identical bulbs are joined in series with a 20 V battery (ideal wires). How many volts does each bulb get? =
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber band (c) a dry cork (d) aluminium foil
35. 35.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
36. 36.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
37. 37.💡 2 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
38. 38.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
39. 39.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
40. 40.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) an open circuit (c) a parallel circuit (d) a short circuit

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