Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 48 · 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: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
2. 2.🔋 Does a television give electricity or use electricity? (a) gives electricity (b) uses electricity
3. 3.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) two (d) one
4. 4.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) Yes (b) No
5. 5.💡 4 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. Bulbs 1 and 4 are taken out of their holders. How many bulbs glow?
6. 6.🔋 7 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
7. 7.Which of these is not safe? (a) build with an adult near (b) climb an electric pole (c) dry your hands first (d) take cells out after use
8. 8.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) a wire has come loose (c) all wires are joined (d) a wire is cut
9. 9.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
10. 10.🔌 Which metal is used for most electric wires at home? (a) glass (b) copper (c) plastic (d) rubber
11. 11.💡 Why is house wiring done in parallel? (a) to save copper only (b) each gets full voltage (c) so all go off together (d) to make bulbs dim
12. 12.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
13. 13.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
14. 14.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) by Wi-Fi (d) in parallel
15. 15.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
16. 16.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) each gets the full volts (d) one bulb out, all go out
17. 17.True or false: one tall, one short bar is the symbol for an LED. (a) True (b) False
18. 18.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they all go out (d) they keep glowing
19. 19.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) ammeter (b) cell (c) bulb (d) resistor
20. 20.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
21. 21.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
22. 22.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) dust particles (c) photons (d) electrons
23. 23.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
24. 24.Which of these gives us electricity? (a) a washing machine (b) a solar panel (c) a mobile phone (d) a computer
25. 25.⚠️ Is it safe to touch a fallen wire? (a) not safe (b) safe
26. 26.True or false: to use a cable with cuts is not safe. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) open a phone charger (b) take cells out after use (c) touch a fallen wire (d) fly a kite near wires
28. 28.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
29. 29.⚡ A cell changes stored chemical energy into which kind of energy? (a) nuclear energy (b) wind energy (c) sound energy (d) electrical energy
30. 30.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
31. 31.True or false: to use small battery cells is safe. (a) False (b) True
32. 32.🔘 When a switch is ON, the circuit is … (a) cut (b) open (c) closed (d) broken
33. 33.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a conductor (c) a cell (d) an insulator
34. 34.🔌 Is a dry cork a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
36. 36.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
37. 37.True or false: to open a phone charger is safe. (a) True (b) False
38. 38.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
39. 39.⚡ What does an electric kettle mainly change electricity into? (a) sound (b) light (c) movement (d) heat
40. 40.Which of these is not safe? (a) throw cells in a fire (b) stop if a part gets hot (c) fly kites in open fields (d) keep drinks far away

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