Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 321 · 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.🔍 Which is the odd one out? (a) climb an electric pole (b) use a cable with cuts (c) use mains for a project (d) fly kites in open fields
2. 2.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
3. 3.Which of these mainly gives out heat? (a) an electric toy car (b) a loudspeaker (c) an LED lamp (d) a room heater
4. 4.Which drawing is the symbol for a cell? (a) triangle against a bar (b) triangle, bar and arrows (c) a circle with A inside (d) a long and a short line
5. 5.Which of these mainly gives out heat? (a) an electric toy car (b) a night lamp (c) a buzzer (d) an electric iron
6. 6.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) two or more cell symbols (c) a circle with A inside (d) triangle, bar and arrows
7. 7.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
8. 8.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
9. 9.🔦 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
10. 10.🔍 Which is the odd one out? (a) a metal paper clip (b) a safety pin (c) a rubber band (d) aluminium foil
11. 11.🔘 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 OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
12. 12.🔋 A 3 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
13. 13.True or false: a circle with V inside is the symbol for a voltmeter. (a) False (b) True
14. 14.⚡ What does a buzzer mainly change electricity into? (a) sound (b) movement (c) light (d) heat
15. 15.🔍 Which is the odd one out? (a) a copper wire (b) aluminium foil (c) a brass key (d) a woollen thread
16. 16.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 9 V (c) 230 V (d) 1.5 V
17. 17.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) by Wi-Fi (d) in series
18. 18.🔍 Which is the odd one out? (a) dry your hands first (b) keep drinks far away (c) take cells out after use (d) use a cable with cuts
19. 19.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a younger child (d) a trusted adult
20. 20.True or false: a safety pin is an insulator. (a) True (b) False
21. 21.💡 3 identical bulbs are joined in series with a 4.5 V battery (ideal wires). How many volts does each bulb get? =
22. 22.🔦 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) No (b) Yes
23. 23.Which of these is safe? (a) use a cable with cuts (b) open a phone charger (c) dry your hands first (d) touch a switch when wet
24. 24.🔍 Which is the odd one out? (a) a mixer grinder (b) a torch (c) an electric drill (d) a table fan
25. 25.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
26. 26.🔘 A bulb and a cell are joined through 4 switches on 4 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?
27. 27.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
28. 28.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
29. 29.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
30. 30.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
31. 31.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
32. 32.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
33. 33.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
34. 34.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a push button
35. 35.Which of these mainly makes sound? (a) an electric drill (b) a ceiling fan (c) an electric kettle (d) a school bell
36. 36.Which of these gives us electricity? (a) a computer (b) a wind turbine (c) a refrigerator (d) a television
37. 37.💡 5 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?
38. 38.💡 A battery lights 4 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
39. 39.True or false: “a single current path” is true of a series circuit. (a) True (b) False
40. 40.🔋 2 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =

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