Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 540 · 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.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) pull them by the hand (c) pour water on them (d) shout for an adult
2. 2.💡 3 identical bulbs are joined in series with a 4.5 V battery (ideal wires). How many volts does each bulb get? =
3. 3.💡 6 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 5 is taken out of its holder. Does bulb 4 glow? (a) No (b) Yes
4. 4.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
5. 5.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
6. 6.True or false: triangle against a bar is the symbol for a battery. (a) False (b) True
7. 7.Which of these is a conductor? (a) a cotton thread (b) a metal paper clip (c) a rubber band (d) a plastic straw
8. 8.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) wind energy (c) nuclear energy (d) electrical energy
9. 9.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 6 glow? (a) No (b) Yes
10. 10.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
11. 11.True or false: to fly a kite near wires is safe. (a) False (b) True
12. 12.True or false: to open a phone charger is safe. (a) False (b) True
13. 13.🔘 Which kind of switch works only while pressed? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a push button
14. 14.🔦 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) Yes (b) No
15. 15.Which of these mainly gives out heat? (a) a water heater (b) a buzzer (c) a night lamp (d) a torch
16. 16.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
17. 17.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
18. 18.True or false: a slide switch slides side to side. (a) False (b) True
19. 19.Which of these gives us electricity? (a) a battery (b) a refrigerator (c) a mobile phone (d) a washing machine
20. 20.🔍 Which is the odd one out? (a) dry your hands first (b) use small battery cells (c) use a cable with cuts (d) take cells out after use
21. 21.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) a smaller voltage (d) the same voltage
22. 22.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
23. 23.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
24. 24.True or false: to take cells out after use is not safe. (a) False (b) True
25. 25.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) wind energy (d) light energy
26. 26.True or false: aluminium foil is an insulator. (a) True (b) False
27. 27.💡 5 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?
28. 28.Which of these means the circuit is closed? (a) the loop is complete (b) the switch is OFF (c) the bulb is unscrewed (d) a wire has come loose
29. 29.True or false: a table fan mainly gives out heat. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) fly kites in open fields (b) build with an adult near (c) climb an electric pole (d) stay away from pylons
31. 31.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
32. 32.True or false: an electric kettle mainly makes sound. (a) True (b) False
33. 33.🔁 What must there be for a current to flow? (a) a plastic gap (b) a broken path (c) one loose end (d) a complete loop
34. 34.🔘 When a switch is ON, the circuit is … (a) open (b) closed (c) cut (d) broken
35. 35.🔌 Is a brass key a conductor or an insulator? (a) a conductor (b) an insulator
36. 36.⚡ What does a torch mainly change electricity into? (a) light (b) movement (c) heat (d) sound
37. 37.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
38. 38.💡 In a series circuit, how many paths does the current have? (a) one (b) one for each bulb (c) none (d) two
39. 39.🔘 Which kind of switch slides side to side? (a) a reed switch (b) a push button (c) a tilt switch (d) a slide switch
40. 40.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =

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