Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 311 · 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.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber band across the gap. Does the bulb glow? (a) No (b) Yes
2. 2.✏️ Why do engineers draw circuits with symbols? (a) symbols are heavier (b) quick and clear for all (c) to hide the circuit (d) to make it colourful
3. 3.Which of these gives us electricity? (a) a television (b) a washing machine (c) a wind turbine (d) a mobile phone
4. 4.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
5. 5.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
6. 6.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a toggle switch (c) a slide switch (d) a tilt switch
7. 7.💡 5 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?
8. 8.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
9. 9.🔍 Which is the odd one out? (a) a toaster (b) an electric iron (c) a table fan (d) a room heater
10. 10.🔍 Which is the odd one out? (a) stay away from pylons (b) climb an electric pole (c) fly kites in open fields (d) take cells out after use
11. 11.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
12. 12.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
13. 13.🔌 Most metals are good … (a) conductors (b) magnets only (c) insulators (d) batteries
14. 14.Which of these is not safe? (a) keep drinks far away (b) use small battery cells (c) fly a kite near wires (d) stop if a part gets hot
15. 15.Which of these is a conductor? (a) a plastic ruler (b) a plastic straw (c) a steel spoon (d) a rubber band
16. 16.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
17. 17.True or false: if a cell is taken out, the circuit is open and no current flows. (a) False (b) True
18. 18.True or false: if the loop is complete, the circuit is open and no current flows. (a) False (b) True
19. 19.🔁 What must there be for a current to flow? (a) a broken path (b) a complete loop (c) one loose end (d) a plastic gap
20. 20.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
21. 21.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) a short circuit (c) a safe circuit (d) an open circuit
22. 22.🔍 Which is the odd one out? (a) throw cells in a fire (b) climb an electric pole (c) take cells out after use (d) open a phone charger
23. 23.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
24. 24.🔋 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)? =
25. 25.True or false: to fly a kite near wires is safe. (a) False (b) True
26. 26.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
27. 27.🔍 Which is the odd one out? (a) a rubber eraser (b) a ceramic cup (c) aluminium foil (d) a dry cork
28. 28.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by an iron nail. Does the bulb glow? (a) Yes (b) No
29. 29.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) two equal parallel lines (c) a line lifted at a gap (d) a circle with A inside
30. 30.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) so all go off together (d) to save copper only
31. 31.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
32. 32.Which of these is safe? (a) use a cable with cuts (b) dry your hands first (c) poke things in a socket (d) touch a fallen wire
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic straw across the gap. Does the bulb glow? (a) Yes (b) No
34. 34.⚡ What does a torch mainly change electricity into? (a) heat (b) movement (c) light (d) sound
35. 35.🔘 Which kind of switch springs back when let go? (a) a reed switch (b) a tilt switch (c) a toggle switch (d) a push button
36. 36.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
37. 37.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one bulb out, all go out (d) one out, the rest glow
39. 39.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) True (b) False
40. 40.✏️ In a circuit diagram, which part is drawn as a straight line? (a) junction (b) bulb (c) LED (d) wire

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