Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 23 · 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 climb an electric pole is not safe. (a) False (b) True
2. 2.True or false: a circle with an X in it is the symbol for a bulb. (a) True (b) False
3. 3.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) bulb (b) ammeter (c) battery (d) diode
4. 4.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a cell (c) an insulator (d) a conductor
5. 5.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
6. 6.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
7. 7.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
8. 8.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
9. 9.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) by Wi-Fi (d) in parallel
10. 10.💡 4 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?
11. 11.Which of these is true of a series circuit? (a) one out, the rest glow (b) a break stops every bulb (c) used in house wiring (d) own switch for each bulb
12. 12.Which drawing is the symbol for a switch? (a) a circle with a cross (b) a straight line (c) a line lifted at a gap (d) a circle with M inside
13. 13.🔘 Which kind of switch flips up or down? (a) a push button (b) a tilt switch (c) a toggle switch (d) a slide switch
14. 14.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) electrical energy (c) sound energy (d) wind energy
15. 15.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) movement energy (c) sound energy (d) chemical energy
16. 16.Which of these is a conductor? (a) a cotton thread (b) a plastic straw (c) a steel coin (d) a rubber band
17. 17.🔘 When a switch is ON, the circuit is … (a) broken (b) cut (c) open (d) closed
18. 18.🔌 Is a dry cork a conductor or an insulator? (a) an insulator (b) a conductor
19. 19.🔍 Which is the odd one out? (a) a glass marble (b) a graphite rod (c) a metal paper clip (d) a steel spoon
20. 20.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
21. 21.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.Which of these is a conductor? (a) a glass marble (b) a rubber eraser (c) a rubber band (d) a safety pin
23. 23.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
24. 24.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
25. 25.🔁 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
26. 26.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
27. 27.Which of these is true of a parallel circuit? (a) a single current path (b) own switch for each bulb (c) a break stops every bulb (d) bulbs share the voltage
28. 28.⚡ What does an electric toy car mainly change electricity into? (a) sound (b) light (c) heat (d) movement
29. 29.🔘 Which kind of switch stays where you flip it? (a) a tilt switch (b) a toggle switch (c) a reed switch (d) a slide switch
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a dry cork
31. 31.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is OFF, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
32. 32.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
33. 33.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
34. 34.🔘 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 ON, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
35. 35.💡 2 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
36. 36.🔍 Which is the odd one out? (a) open a phone charger (b) keep drinks far away (c) touch a fallen wire (d) climb an electric pole
37. 37.Which of these means the circuit is closed? (a) a wire is cut (b) a wire has come loose (c) the switch is ON (d) the bulb is unscrewed
38. 38.⚡ What does a water heater mainly change electricity into? (a) sound (b) heat (c) light (d) movement
39. 39.True or false: “a single current path” is true of a series circuit. (a) True (b) False
40. 40.Which drawing is the symbol for a diode? (a) a small empty box (b) triangle, bar and arrows (c) two equal parallel lines (d) triangle against a bar

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