Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 151 · 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.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
2. 2.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
3. 3.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
4. 4.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) electrical energy (c) wind energy (d) nuclear energy
5. 5.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
6. 6.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
7. 7.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) a break stops every bulb (d) used in house wiring
8. 8.Which drawing is the symbol for an ammeter? (a) a small empty box (b) a circle with an X in it (c) many long-short pairs (d) a circle with A inside
9. 9.💡 6 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 6 are taken out of their holders. Does bulb 2 glow? (a) No (b) Yes
10. 10.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
11. 11.💡 3 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. Bulb 2 is taken out of its holder. Does bulb 3 glow? (a) No (b) Yes
12. 12.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a trusted adult (c) a younger child (d) a stranger online
13. 13.🔘 A bulb and a cell are joined through 5 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
14. 14.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
15. 15.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
16. 16.Which of these uses electricity? (a) a solar panel (b) a generator (c) a wind turbine (d) an air conditioner
17. 17.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
18. 18.Which of these gives us electricity? (a) a power station (b) a television (c) a mobile phone (d) a computer
19. 19.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a push button (c) a toggle switch (d) a tilt switch
20. 20.Which of these gives us electricity? (a) a washing machine (b) a water pump (c) a cell (d) an air conditioner
21. 21.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) each gets the full volts
22. 22.🔋 What should you do with used-up cells? (a) cut them open (b) throw them in a fire (c) give them for recycling (d) bury them in soil
23. 23.Which of these mainly gives out heat? (a) a doorbell (b) an electric drill (c) an electric kettle (d) a mixer grinder
24. 24.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
25. 25.What does a push button do? (a) slides side to side (b) works only while pressed (c) closes when tipped over (d) closes near a magnet
26. 26.True or false: a toggle switch closes near a magnet. (a) False (b) True
27. 27.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
28. 28.💡 2 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
29. 29.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
30. 30.Which of these is a conductor? (a) a paper strip (b) a brass key (c) a plastic straw (d) a plastic ruler
31. 31.Which drawing is the symbol for a bulb? (a) a circle with A inside (b) a circle with an X in it (c) two or more cell symbols (d) a line lifted at a gap
32. 32.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) No (b) Yes
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
34. 34.True or false: a brass key is an insulator. (a) False (b) True
35. 35.True or false: to climb an electric pole is not safe. (a) True (b) False
36. 36.True or false: a plastic ruler is an insulator. (a) False (b) True
37. 37.What does a toggle switch do? (a) closes near a magnet (b) flips up or down (c) closes when tipped over (d) springs back when let go
38. 38.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
39. 39.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
40. 40.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) the shorter line (c) both lines (d) neither line

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