Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 655 · 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.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) ammeter (b) diode (c) LED (d) motor
2. 2.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) own switch for each bulb (d) one out, the rest glow
3. 3.🔍 Which is the odd one out? (a) take cells out after use (b) dry your hands first (c) touch a fallen wire (d) fly kites in open fields
4. 4.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
5. 5.🔍 Which is the odd one out? (a) a safety pin (b) aluminium foil (c) a rubber band (d) a metal paper clip
6. 6.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
7. 7.💡 3 identical bulbs are joined in series with a 7.5 V battery (ideal wires). How many volts does each bulb get? =
8. 8.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) a single current path (d) many paths for current
9. 9.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber eraser. Does the bulb glow? (a) No (b) Yes
10. 10.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
12. 12.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
13. 13.🔍 Which is the odd one out? (a) a wooden stick (b) a steel spoon (c) a steel coin (d) an iron nail
14. 14.True or false: to open a phone charger is safe. (a) False (b) True
15. 15.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
16. 16.Which of these is safe? (a) poke things in a socket (b) fly a kite near wires (c) take cells out after use (d) touch a fallen wire
17. 17.Which of these uses electricity? (a) a bicycle dynamo (b) a washing machine (c) a power station (d) a solar panel
18. 18.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) not joined (d) by Wi-Fi
19. 19.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) friction (c) a magnet (d) electric current
20. 20.🔘 What does a switch do in a circuit? (a) makes electricity (b) changes the voltage (c) stores current (d) opens or closes the loop
21. 21.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) dust particles (d) photons
22. 22.⚠️ 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
23. 23.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
24. 24.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) a cell is taken out (d) the loop is complete
25. 25.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a push button (c) a reed switch (d) a toggle switch
26. 26.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
27. 27.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
28. 28.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
29. 29.True or false: a push button slides side to side. (a) True (b) False
30. 30.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) the bulb is unscrewed (d) all wires are joined
31. 31.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
32. 32.🔍 Which is the odd one out? (a) a street light (b) a night lamp (c) a traffic signal (d) a mixer grinder
33. 33.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
34. 34.Which of these mainly gives out light? (a) a tube light (b) a rice cooker (c) a siren (d) a toaster
35. 35.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
36. 36.⚠️ Which power source should children use for electronics projects? (a) an inverter socket (b) a mains extension board (c) a small battery pack (d) a wall socket
37. 37.True or false: “a single current path” is true of a series circuit. (a) True (b) False
38. 38.True or false: a straight line is the symbol for a wire. (a) False (b) True
39. 39.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a woollen thread. Does the bulb glow? (a) No (b) Yes
40. 40.🔍 Which is the odd one out? (a) a loudspeaker (b) an electric drill (c) a buzzer (d) a siren

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