Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 363 · 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.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) battery (b) diode (c) motor (d) resistor
2. 2.🔘 Which kind of switch works only while pressed? (a) a push button (b) a toggle switch (c) a slide switch (d) a tilt switch
3. 3.What does a push button do? (a) springs back when let go (b) closes near a magnet (c) flips up or down (d) slides side to side
4. 4.🔍 Which is the odd one out? (a) dry your hands first (b) poke things in a socket (c) use small battery cells (d) stop if a part gets hot
5. 5.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
6. 6.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
7. 7.True or false: aluminium foil is an insulator. (a) True (b) False
8. 8.🔘 Which kind of switch slides side to side? (a) a tilt switch (b) a toggle switch (c) a reed switch (d) a slide switch
9. 9.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
10. 10.Which of these is safe? (a) keep drinks far away (b) throw cells in a fire (c) poke things in a socket (d) use mains for a project
11. 11.🔍 Which is the odd one out? (a) a doorbell (b) a buzzer (c) a school bell (d) a mixer grinder
12. 12.🔍 Which is the odd one out? (a) dry your hands first (b) stop if a part gets hot (c) use a cable with cuts (d) use small battery cells
13. 13.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
14. 14.🔋 6 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)? =
15. 15.Which of these is not safe? (a) use small battery cells (b) dry your hands first (c) open a phone charger (d) stop if a part gets hot
16. 16.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
17. 17.🔍 Which is the odd one out? (a) stop if a part gets hot (b) take cells out after use (c) dry your hands first (d) climb an electric pole
18. 18.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
19. 19.🔘 Which kind of switch springs back when let go? (a) a reed switch (b) a push button (c) a toggle switch (d) a tilt switch
20. 20.🔍 Which is the odd one out? (a) use mains for a project (b) stop if a part gets hot (c) use a cable with cuts (d) open a phone charger
21. 21.🔦 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
22. 22.🔘 A bulb and a cell are joined through 4 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
23. 23.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) No (b) Yes
24. 24.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) dust particles (c) water drops (d) electrons
25. 25.🔌 Is a woollen thread a conductor or an insulator? (a) an insulator (b) a conductor
26. 26.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
27. 27.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) it does not matter (c) only one (d) both of them
28. 28.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) the same voltage (d) no voltage
29. 29.🔘 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
30. 30.Which of these is safe? (a) climb an electric pole (b) throw cells in a fire (c) take cells out after use (d) touch a fallen wire
31. 31.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
32. 32.Which of these is not safe? (a) use small battery cells (b) stop if a part gets hot (c) fly kites in open fields (d) poke things in a socket
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) No (b) Yes
34. 34.True or false: to build with an adult near is safe. (a) True (b) False
35. 35.True or false: to climb an electric pole is safe. (a) True (b) False
36. 36.Which of these uses electricity? (a) a bicycle dynamo (b) a power station (c) a mobile phone (d) a wind turbine
37. 37.🔍 Which is the odd one out? (a) a steel coin (b) aluminium foil (c) a metal paper clip (d) a glass marble
38. 38.Which of these mainly makes movement? (a) a mixer grinder (b) a siren (c) a torch (d) a toaster
39. 39.🔍 Which is the odd one out? (a) build with an adult near (b) touch a switch when wet (c) use small battery cells (d) dry your hands first
40. 40.💡 2 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =

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