Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 894 · 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.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
2. 2.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
3. 3.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
5. 5.True or false: a wooden stick is an insulator. (a) False (b) True
6. 6.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) only one (c) it does not matter (d) both of them
7. 7.Which of these is an insulator? (a) a graphite rod (b) a rubber eraser (c) a brass key (d) a steel spoon
8. 8.True or false: triangle, bar and arrows is the symbol for a bulb. (a) False (b) True
9. 9.True or false: a table fan mainly makes movement. (a) False (b) True
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
11. 11.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
12. 12.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
13. 13.⚠️ 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
14. 14.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) an open circuit (d) a series circuit
15. 15.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
16. 16.Which of these uses electricity? (a) a generator (b) a cell (c) an air conditioner (d) a wind turbine
17. 17.🔦 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
18. 18.🔍 Which is the odd one out? (a) build with an adult near (b) use mains for a project (c) stop if a part gets hot (d) use small battery cells
19. 19.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
20. 20.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
21. 21.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in series (d) in parallel
22. 22.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
23. 23.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
24. 24.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
25. 25.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
26. 26.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
27. 27.🔍 Which is the odd one out? (a) dry your hands first (b) keep drinks far away (c) touch a switch when wet (d) stay away from pylons
28. 28.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
29. 29.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
30. 30.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) sound (c) a magnet (d) friction
31. 31.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
32. 32.🔍 Which is the odd one out? (a) a ceiling fan (b) an electric drill (c) an electric toy car (d) a buzzer
33. 33.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
34. 34.🔍 Which is the odd one out? (a) a copper wire (b) aluminium foil (c) a rubber band (d) a steel coin
35. 35.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
36. 36.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are OFF (c) only when both are ON (d) when either is ON
37. 37.🔘 A bulb and a cell are joined through 2 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
38. 38.Which of these is safe? (a) touch a fallen wire (b) poke things in a socket (c) open a phone charger (d) stop if a part gets hot
39. 39.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
40. 40.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes

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