Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 18 · 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.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
2. 2.True or false: a tilt switch stays where you flip it. (a) False (b) True
3. 3.Which of these mainly makes movement? (a) an electric iron (b) a buzzer (c) an exhaust fan (d) a toaster
4. 4.Which of these is an insulator? (a) an iron nail (b) a graphite rod (c) a wooden stick (d) aluminium foil
5. 5.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a long wire (c) a fuse or MCB (d) a plug top
6. 6.🔍 Which is the odd one out? (a) throw cells in a fire (b) fly kites in open fields (c) use a cable with cuts (d) fly a kite near wires
7. 7.Which of these is not safe? (a) use a cable with cuts (b) stay away from pylons (c) keep drinks far away (d) build with an adult near
8. 8.🔘 When a switch is ON, the circuit is … (a) closed (b) open (c) cut (d) broken
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 cotton thread. Does the bulb glow? (a) Yes (b) No
10. 10.Which drawing is the symbol for a cell? (a) a plain rectangle (b) a circle with M inside (c) many long-short pairs (d) a long and a short line
11. 11.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) electrons (c) water drops (d) dust particles
12. 12.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
13. 13.True or false: an iron nail is an insulator. (a) False (b) True
14. 14.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
15. 15.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a short circuit (c) a parallel circuit (d) an open circuit
16. 16.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
17. 17.Which of these is safe? (a) touch a fallen wire (b) throw cells in a fire (c) use a cable with cuts (d) dry your hands first
18. 18.True or false: a steel coin is a conductor. (a) False (b) True
19. 19.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the filament (b) the base (c) the glass (d) the switch
20. 20.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) resistor (b) capacitor (c) diode (d) battery
21. 21.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) LED (b) switch (c) motor (d) cell
22. 22.🔘 Which kind of switch springs back when let go? (a) a tilt switch (b) a push button (c) a toggle switch (d) a slide switch
23. 23.🔍 Which is the odd one out? (a) fly kites in open fields (b) climb an electric pole (c) keep drinks far away (d) use small battery cells
24. 24.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
25. 25.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a complete loop (d) a plastic gap
26. 26.⚠️ Why must we never touch switches with wet hands? (a) it is just untidy (b) water makes it cold (c) it spoils the paint (d) water carries current
27. 27.🔋 2 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)? =
28. 28.What does a toggle switch do? (a) springs back when let go (b) works only while pressed (c) slides side to side (d) flips up or down
29. 29.🔍 Which is the odd one out? (a) poke things in a socket (b) touch a switch when wet (c) take cells out after use (d) climb an electric pole
30. 30.True or false: if the switch is OFF, the circuit is open and no current flows. (a) False (b) True
31. 31.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
32. 32.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) little stars (d) dotted circles
33. 33.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) keep drinks far away (d) use mains for a project
34. 34.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
35. 35.Which of these is an insulator? (a) a brass key (b) a plastic ruler (c) a copper wire (d) a metal paper clip
36. 36.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper strip (c) an iron nail (d) a wooden stick
38. 38.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
39. 39.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
40. 40.Which of these mainly makes sound? (a) a table fan (b) an LED lamp (c) a buzzer (d) a toaster

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