Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 806 · 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.Which of these uses electricity? (a) a solar panel (b) a washing machine (c) a power station (d) a bicycle dynamo
2. 2.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
3. 3.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
4. 4.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) symbols are heavier (c) to make it colourful (d) quick and clear for all
5. 5.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) wavy lines (d) little stars
7. 7.Which drawing is the symbol for a capacitor? (a) a circle with A inside (b) two equal parallel lines (c) a circle with V inside (d) a circle with a cross
8. 8.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
9. 9.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it spoils the paint (c) water carries current (d) it is just untidy
10. 10.🔌 Is a safety pin a conductor or an insulator? (a) an insulator (b) a conductor
11. 11.🔦 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) No (b) Yes
12. 12.🔗 Series or parallel circuit: “each gets the full volts”? (a) parallel (b) series
13. 13.🔋 A 9 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
14. 14.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
15. 15.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is ON, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
16. 16.🔍 Which is the odd one out? (a) a metal paper clip (b) a ceramic cup (c) a brass key (d) a graphite rod
17. 17.Which of these is not safe? (a) poke things in a socket (b) dry your hands first (c) use small battery cells (d) fly kites in open fields
18. 18.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?
19. 19.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
20. 20.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
21. 21.Which drawing is the symbol for a cell? (a) a straight line (b) two or more cell symbols (c) a circle with A inside (d) one tall, one short bar
22. 22.What does a toggle switch do? (a) closes near a magnet (b) works only while pressed (c) springs back when let go (d) flips up or down
23. 23.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. 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
24. 24.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
25. 25.🔘 A bulb and a cell are joined through 4 switches on 4 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
26. 26.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) only when both are ON (c) never (d) when either is ON
27. 27.🔋 Does a mobile phone give electricity or use electricity? (a) gives electricity (b) uses electricity
28. 28.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) neither line (c) the shorter line (d) both lines
29. 29.True or false: a push button springs back when let go. (a) True (b) False
30. 30.⚡ What does a tube light mainly change electricity into? (a) movement (b) sound (c) heat (d) light
31. 31.Which of these is not safe? (a) stay away from pylons (b) dry your hands first (c) climb an electric pole (d) use small battery cells
32. 32.🔋 A 3 V battery and one 1.5 V cell are joined in series, all facing the same way. What is the total voltage (in volts)? =
33. 33.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
34. 34.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a toggle switch
35. 35.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) stay away from pylons (b) use a cable with cuts (c) climb an electric pole (d) use mains for a project
37. 37.🔦 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 copper wire. Does the bulb glow? (a) Yes (b) No
38. 38.Which of these is true of a series circuit? (a) one bulb out, all go out (b) used in house wiring (c) each gets the full volts (d) one out, the rest glow
39. 39.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
40. 40.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes

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