Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 553 · 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 drawing is the symbol for an ammeter? (a) a line lifted at a gap (b) a plain rectangle (c) triangle, bar and arrows (d) a circle with A inside
2. 2.Which of these is safe? (a) stop if a part gets hot (b) open a phone charger (c) touch a fallen wire (d) poke things in a socket
3. 3.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in series (d) in parallel
4. 4.🔌 Is a rubber eraser a conductor or an insulator? (a) an insulator (b) a conductor
5. 5.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a woollen thread. Does the bulb glow? (a) Yes (b) No
6. 6.True or false: a toaster mainly gives out heat. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) open a phone charger (b) keep drinks far away (c) build with an adult near (d) stop if a part gets hot
8. 8.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
9. 9.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
10. 10.⚡ What does a mixer grinder mainly change electricity into? (a) heat (b) movement (c) sound (d) light
11. 11.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
12. 12.Which of these is a conductor? (a) a wooden stick (b) a ceramic cup (c) a paper strip (d) a steel coin
13. 13.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
14. 14.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a tilt switch (c) a push button (d) a reed switch
15. 15.Which of these means the circuit is closed? (a) all wires are joined (b) a wire is cut (c) the switch is OFF (d) a wire has come loose
16. 16.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are OFF (b) only when both are ON (c) when either is ON (d) never
17. 17.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are ON (d) when both are OFF
18. 18.Which of these is safe? (a) use mains for a project (b) take cells out after use (c) touch a fallen wire (d) fly a kite near wires
19. 19.Which drawing is the symbol for a resistor? (a) two equal parallel lines (b) a plain rectangle (c) a long and a short line (d) a circle with V inside
20. 20.🔋 Does a mobile phone give electricity or use electricity? (a) uses electricity (b) gives electricity
21. 21.Which of these is a conductor? (a) a wooden stick (b) a rubber band (c) a woollen thread (d) aluminium foil
22. 22.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) water drops (c) electrons (d) photons
23. 23.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
24. 24.True or false: a traffic signal mainly gives out heat. (a) False (b) True
25. 25.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
26. 26.Which of these is true of a parallel circuit? (a) a single current path (b) used in house wiring (c) a break stops every bulb (d) bulbs share the voltage
27. 27.Which of these means the circuit is closed? (a) a wire is cut (b) the loop is complete (c) the bulb is unscrewed (d) a wire has come loose
28. 28.🔋 Does a television give electricity or use electricity? (a) uses electricity (b) gives electricity
29. 29.Which of these is a conductor? (a) a cotton thread (b) a steel spoon (c) a paper strip (d) a dry cork
30. 30.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a conductor (c) a switch that is ON (d) a cell
31. 31.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
32. 32.Which of these uses electricity? (a) a solar panel (b) a mobile phone (c) a cell (d) a generator
33. 33.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
34. 34.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
35. 35.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) switch (b) battery (c) diode (d) ammeter
36. 36.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a kind of bulb (d) a switch with a lid
37. 37.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) the longer line (d) both lines
38. 38.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a push button (c) a reed switch (d) a toggle switch
39. 39.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
40. 40.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to hide the circuit (d) to make it colourful

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