Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 847 · 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.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 12 V (c) 1.5 V (d) 9 V
2. 2.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one for each bulb (d) one
3. 3.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
4. 4.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) sound (c) electric current (d) friction
5. 5.What does a tilt switch do? (a) works only while pressed (b) closes when tipped over (c) flips up or down (d) slides side to side
6. 6.Which of these is an insulator? (a) a ceramic cup (b) an iron nail (c) a steel spoon (d) a copper wire
7. 7.Which of these gives us electricity? (a) a generator (b) a water pump (c) a computer (d) an air conditioner
8. 8.🔋 What is a battery? (a) a switch with a lid (b) a kind of bulb (c) one single wire (d) two or more cells joined
9. 9.🔍 Which is the odd one out? (a) keep drinks far away (b) touch a fallen wire (c) dry your hands first (d) use small battery cells
10. 10.⚠️ Is it safe to fly kites in open fields? (a) not safe (b) safe
11. 11.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.Which of these is safe? (a) throw cells in a fire (b) open a phone charger (c) fly a kite near wires (d) take cells out after use
13. 13.🔍 Which is the odd one out? (a) use mains for a project (b) open a phone charger (c) keep drinks far away (d) fly a kite near wires
14. 14.💡 3 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?
15. 15.True or false: a push button closes when tipped over. (a) False (b) True
16. 16.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) no voltage (d) a smaller voltage
17. 17.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
18. 18.⚠️ Why must we never touch switches with wet hands? (a) it is just untidy (b) water carries current (c) water makes it cold (d) it spoils the paint
19. 19.💡 3 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 2 glow? (a) Yes (b) No
20. 20.💡 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 6 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
21. 21.True or false: a paper strip is a conductor. (a) True (b) False
22. 22.💡 4 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
23. 23.Which drawing is the symbol for a motor? (a) a circle with a cross (b) a circle with M inside (c) two or more cell symbols (d) a line lifted at a gap
24. 24.True or false: to stop if a part gets hot is safe. (a) True (b) False
25. 25.Which of these is safe? (a) use a cable with cuts (b) fly a kite near wires (c) throw cells in a fire (d) build with an adult near
26. 26.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) cell (b) voltmeter (c) diode (d) ammeter
27. 27.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
28. 28.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) motor (b) cell (c) switch (d) wire
29. 29.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
30. 30.🔌 Is a steel coin a conductor or an insulator? (a) a conductor (b) an insulator
31. 31.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) motor (b) switch (c) battery (d) bulb
32. 32.🔋 A 9 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
33. 33.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) True (b) False
34. 34.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) dust particles (d) electrons
35. 35.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
36. 36.What does a reed switch do? (a) closes near a magnet (b) stays where you flip it (c) works only while pressed (d) springs back when let go
37. 37.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
38. 38.True or false: to use mains for a project is safe. (a) False (b) True
39. 39.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
40. 40.True or false: “a single current path” is true of a series circuit. (a) True (b) False

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids