Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 387 · 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.🔋 5 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
2. 2.🔍 Which is the odd one out? (a) an LED lamp (b) a traffic signal (c) a street light (d) an electric kettle
3. 3.True or false: to use mains for a project is not safe. (a) True (b) False
4. 4.Which of these is true of a series circuit? (a) one out, the rest glow (b) own switch for each bulb (c) each gets the full volts (d) a single current path
5. 5.Which of these mainly makes sound? (a) a street light (b) a siren (c) an electric drill (d) a toaster
6. 6.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
7. 7.🔁 What must there be for a current to flow? (a) one loose end (b) a plastic gap (c) a broken path (d) a complete loop
8. 8.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
9. 9.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
10. 10.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
11. 11.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
12. 12.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
13. 13.Which of these gives us electricity? (a) a washing machine (b) a mobile phone (c) a television (d) a solar panel
14. 14.Which of these means the circuit is closed? (a) a wire has come loose (b) the switch is OFF (c) all wires are joined (d) a wire is cut
15. 15.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
16. 16.Which drawing is the symbol for a bulb? (a) two equal parallel lines (b) a plain rectangle (c) two or more cell symbols (d) a circle with a cross
17. 17.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) nuclear energy (c) wind energy (d) sound energy
18. 18.🔘 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 OFF, B is ON, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
19. 19.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
20. 20.True or false: an electric iron mainly gives out heat. (a) False (b) True
21. 21.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
22. 22.True or false: if the switch is OFF, the circuit is open and no current flows. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a torch (b) a night lamp (c) a tube light (d) a ceiling fan
24. 24.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
25. 25.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
26. 26.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes
27. 27.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
28. 28.Which of these is true of a parallel circuit? (a) many paths for current (b) a single current path (c) bulbs share the voltage (d) a break stops every bulb
29. 29.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
30. 30.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) a magnet (c) sound (d) friction
31. 31.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
32. 32.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a trusted adult (d) a younger child
33. 33.Which of these is not safe? (a) use small battery cells (b) stop if a part gets hot (c) take cells out after use (d) fly a kite near wires
34. 34.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) No (b) Yes
35. 35.Which drawing is the symbol for an LED? (a) a small empty box (b) triangle, bar and arrows (c) triangle against a bar (d) a circle with an X in it
36. 36.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
37. 37.⚡ What does an electric drill mainly change electricity into? (a) movement (b) sound (c) heat (d) light
38. 38.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
39. 39.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) stores current (d) opens or closes the loop
40. 40.True or false: a tilt switch closes near a magnet. (a) True (b) False

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