Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 57 · 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: to touch a switch when wet is not safe. (a) False (b) True
2. 2.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
3. 3.🔘 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 OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
4. 4.True or false: a straight line is the symbol for a junction. (a) True (b) False
5. 5.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) ammeter (b) motor (c) resistor (d) wire
6. 6.🔍 Which is the odd one out? (a) a room heater (b) an electric iron (c) an electric kettle (d) a torch
7. 7.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to make bulbs dim (d) to save copper only
8. 8.Which of these is not safe? (a) poke things in a socket (b) stop if a part gets hot (c) build with an adult near (d) stay away from pylons
9. 9.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the switch (b) the filament (c) the base (d) the glass
10. 10.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a conductor (c) a cell (d) a switch that is ON
11. 11.True or false: if the loop is complete, the circuit is closed and current flows. (a) True (b) False
12. 12.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
13. 13.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button
14. 14.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a reed switch (c) a toggle switch (d) a slide switch
15. 15.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a rubber eraser. Does the bulb glow? (a) No (b) Yes
16. 16.True or false: many long-short pairs is the symbol for a battery. (a) False (b) True
17. 17.🔋 3 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
18. 18.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
19. 19.Which of these is a conductor? (a) a graphite rod (b) a glass marble (c) a rubber eraser (d) a rubber band
20. 20.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a younger child (d) a trusted adult
21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
22. 22.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) junction (b) diode (c) LED (d) ammeter
23. 23.⚡ What does an electric iron mainly change electricity into? (a) sound (b) light (c) heat (d) movement
24. 24.Which of these mainly makes movement? (a) a doorbell (b) a room heater (c) a street light (d) an exhaust fan
25. 25.True or false: a traffic signal mainly gives out light. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) use small battery cells (b) take cells out after use (c) poke things in a socket (d) fly kites in open fields
27. 27.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. How many bulbs glow?
28. 28.Which of these means the circuit is closed? (a) all wires are joined (b) the bulb is unscrewed (c) a wire is cut (d) a wire has come loose
29. 29.🔍 Which is the odd one out? (a) stop if a part gets hot (b) open a phone charger (c) climb an electric pole (d) use a cable with cuts
30. 30.Which of these is a conductor? (a) a cotton thread (b) a paper strip (c) a glass marble (d) an iron nail
31. 31.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 12 V (c) 1.5 V (d) 230 V
32. 32.💡 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
33. 33.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
34. 34.What does a push button do? (a) works only while pressed (b) stays where you flip it (c) closes when tipped over (d) flips up or down
35. 35.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
36. 36.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
37. 37.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
38. 38.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) electrons (c) photons (d) water drops
39. 39.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
40. 40.💡 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 2 is taken out of its holder. How many bulbs glow?

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