Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 265 · 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.⚠️ Who should be with you when you build a circuit? (a) a trusted adult (b) nobody (c) a younger child (d) a stranger online
2. 2.Which of these uses electricity? (a) a cell (b) a solar panel (c) a computer (d) a wind turbine
3. 3.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a push button (c) a toggle switch (d) a tilt switch
4. 4.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
5. 5.Which of these is not safe? (a) keep drinks far away (b) dry your hands first (c) fly a kite near wires (d) stop if a part gets hot
6. 6.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) one out, the rest glow (d) one bulb out, all go out
7. 7.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
8. 8.🔋 How many 1.5 V cells must be joined in series to give 12 V?
9. 9.True or false: an LED lamp mainly gives out light. (a) False (b) True
10. 10.Which of these mainly gives out light? (a) an exhaust fan (b) a night lamp (c) a water heater (d) a table fan
11. 11.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
12. 12.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) a magnet (c) friction (d) sound
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
14. 14.Which of these uses electricity? (a) a cell (b) a mobile phone (c) a power station (d) a bicycle dynamo
15. 15.True or false: a line lifted at a gap is the symbol for a motor. (a) False (b) True
16. 16.Which of these is a conductor? (a) an iron nail (b) a plastic ruler (c) a ceramic cup (d) a paper strip
17. 17.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
18. 18.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) resistor (c) bulb (d) diode
19. 19.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a push button
20. 20.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
21. 21.True or false: a circle with A inside is the symbol for an ammeter. (a) False (b) True
22. 22.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
23. 23.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
24. 24.Which of these is not safe? (a) fly kites in open fields (b) poke things in a socket (c) stay away from pylons (d) take cells out after use
25. 25.True or false: a tilt switch works only while pressed. (a) True (b) False
26. 26.True or false: to keep drinks far away is not safe. (a) False (b) True
27. 27.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
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 a plastic ruler. Does the bulb glow? (a) Yes (b) No
29. 29.True or false: a plastic straw is an insulator. (a) False (b) True
30. 30.🔘 A bulb and a cell are joined through 2 switches on 2 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?
31. 31.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) throw them in a fire (d) give them for recycling
32. 32.Which of these mainly gives out light? (a) an exhaust fan (b) an electric drill (c) an LED lamp (d) an electric iron
33. 33.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) No (b) Yes
36. 36.Which of these means the circuit is closed? (a) the switch is OFF (b) all wires are joined (c) a cell is taken out (d) a wire is cut
37. 37.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) capacitor (b) bulb (c) junction (d) battery
38. 38.💡 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
39. 39.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
40. 40.What does a push button do? (a) flips up or down (b) closes when tipped over (c) works only while pressed (d) closes near a magnet

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