Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 269 · 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.What does a toggle switch do? (a) closes near a magnet (b) closes when tipped over (c) works only while pressed (d) flips up or down
2. 2.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
3. 3.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) half the voltage (d) the same voltage
4. 4.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
5. 5.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
6. 6.💡 4 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
7. 7.🔁 Is the circuit closed or open if a cell is taken out? (a) open (b) closed
8. 8.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
9. 9.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes
11. 11.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
12. 12.🔘 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 ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
13. 13.🔍 Which is the odd one out? (a) a siren (b) a mixer grinder (c) an electric drill (d) a ceiling fan
14. 14.🔘 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
15. 15.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
16. 16.🔦 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
17. 17.🔍 Which is the odd one out? (a) keep drinks far away (b) poke things in a socket (c) open a phone charger (d) throw cells in a fire
18. 18.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they get dimmer (c) they all go out (d) they explode
19. 19.What does a slide switch do? (a) closes when tipped over (b) flips up or down (c) slides side to side (d) springs back when let go
20. 20.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) plastic (d) glass
21. 21.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) not joined (d) in series
22. 22.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a trusted adult (c) nobody (d) a younger child
23. 23.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pour water on them (d) pull them by the hand
24. 24.Which of these is not safe? (a) fly kites in open fields (b) touch a switch when wet (c) keep drinks far away (d) stay away from pylons
25. 25.True or false: a woollen thread is an insulator. (a) True (b) False
26. 26.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is a conductor (c) plastic is an insulator (d) to make them heavy
27. 27.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
28. 28.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
29. 29.True or false: a tilt switch closes when tipped over. (a) False (b) True
30. 30.💡 3 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
31. 31.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) Yes (b) No
32. 32.Which of these mainly gives out heat? (a) a doorbell (b) a room heater (c) a siren (d) a traffic signal
33. 33.💡 A battery lights 3 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
34. 34.True or false: if the loop is complete, the circuit is closed and current flows. (a) True (b) False
35. 35.💡 In a series circuit, how many paths does the current have? (a) one (b) one for each bulb (c) none (d) two
36. 36.🔦 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
37. 37.💡 4 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. How many bulbs glow?
38. 38.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
39. 39.Which of these is a conductor? (a) a brass key (b) a rubber eraser (c) a plastic ruler (d) a wooden stick
40. 40.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) stores current (c) changes the voltage (d) makes electricity

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