Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 682 · 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 is true of a series circuit? (a) own switch for each bulb (b) a single current path (c) one out, the rest glow (d) each gets the full volts
2. 2.Which drawing is the symbol for a wire? (a) two equal parallel lines (b) a straight line (c) a line lifted at a gap (d) a long and a short line
3. 3.Which of these is safe? (a) open a phone charger (b) use mains for a project (c) touch a switch when wet (d) keep drinks far away
4. 4.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 1 and 5 are taken out of their holders. Does bulb 4 glow? (a) No (b) Yes
5. 5.True or false: a siren mainly gives out heat. (a) True (b) False
6. 6.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. Does bulb 5 glow? (a) Yes (b) No
7. 7.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
8. 8.🔍 Which is the odd one out? (a) keep drinks far away (b) dry your hands first (c) take cells out after use (d) poke things in a socket
9. 9.✏️ In a circuit diagram, which part is drawn as a straight line? (a) bulb (b) wire (c) voltmeter (d) diode
10. 10.True or false: to build with an adult near is safe. (a) True (b) False
11. 11.🔌 Most metals are good … (a) conductors (b) insulators (c) batteries (d) magnets only
12. 12.🔋 7 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
13. 13.Which of these mainly gives out heat? (a) a tube light (b) a mixer grinder (c) a rice cooker (d) a siren
14. 14.True or false: a ceramic cup is a conductor. (a) True (b) False
15. 15.Which of these is not safe? (a) use small battery cells (b) stay away from pylons (c) open a phone charger (d) keep drinks far away
16. 16.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
17. 17.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
18. 18.🔍 Which is the odd one out? (a) a school bell (b) a doorbell (c) a toaster (d) a buzzer
19. 19.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
20. 20.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
21. 21.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
22. 22.🔍 Which is the odd one out? (a) fly kites in open fields (b) build with an adult near (c) dry your hands first (d) fly a kite near wires
23. 23.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) electrons (d) dust particles
24. 24.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
25. 25.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
26. 26.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a push button (d) a tilt switch
27. 27.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
28. 28.🔘 A bulb and a cell are joined through 5 switches on 5 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?
29. 29.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
30. 30.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
31. 31.True or false: a push button flips up or down. (a) False (b) True
32. 32.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
33. 33.Which of these is not safe? (a) use a cable with cuts (b) stop if a part gets hot (c) use small battery cells (d) keep drinks far away
34. 34.🔍 Which is the odd one out? (a) a steel coin (b) a ceramic cup (c) a rubber band (d) a plastic straw
35. 35.Which of these means the circuit is closed? (a) a wire is cut (b) a cell is taken out (c) the bulb is unscrewed (d) the switch is ON
36. 36.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.🔍 Which is the odd one out? (a) a steel coin (b) a rubber band (c) a steel spoon (d) a safety pin
38. 38.Which of these mainly makes movement? (a) a table fan (b) a siren (c) a street light (d) a rice cooker
39. 39.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
40. 40.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series

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