Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 681 · 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.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
2. 2.Which drawing is the symbol for an LED? (a) triangle against a bar (b) a plain rectangle (c) many long-short pairs (d) triangle, bar and arrows
3. 3.True or false: if a cell is taken out, the circuit is open and no current flows. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) build with an adult near (b) touch a switch when wet (c) use a cable with cuts (d) use mains for a project
5. 5.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
6. 6.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
7. 7.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the metal tip (d) the steel shaft
8. 8.🔍 Which is the odd one out? (a) a rice cooker (b) an electric kettle (c) a street light (d) a water heater
9. 9.🔍 Which is the odd one out? (a) climb an electric pole (b) throw cells in a fire (c) dry your hands first (d) touch a switch when wet
10. 10.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
11. 11.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) none (c) two (d) one
12. 12.What does a toggle switch do? (a) slides side to side (b) flips up or down (c) springs back when let go (d) closes near a magnet
13. 13.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it spoils the paint (c) it is just untidy (d) water carries current
14. 14.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
15. 15.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) a single current path (d) many paths for current
16. 16.🔍 Which is the odd one out? (a) a paper strip (b) a wooden stick (c) a dry cork (d) a copper wire
17. 17.🔌 Which metal is used for most electric wires at home? (a) plastic (b) copper (c) glass (d) rubber
18. 18.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
19. 19.🔘 Which kind of switch closes near a magnet? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
20. 20.True or false: a safety pin is a conductor. (a) True (b) False
21. 21.⚡ What does a traffic signal mainly change electricity into? (a) sound (b) light (c) movement (d) heat
22. 22.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the glass (b) the switch (c) the base (d) the filament
23. 23.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a straight line (c) a circle with M inside (d) a long and a short line
24. 24.True or false: many long-short pairs is the symbol for a switch. (a) True (b) False
25. 25.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
26. 26.🔍 Which is the odd one out? (a) a ceiling fan (b) a rice cooker (c) an electric kettle (d) an electric iron
27. 27.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) one out, the rest glow (d) one bulb out, all go out
28. 28.🔍 Which is the odd one out? (a) a brass key (b) an iron nail (c) a paper strip (d) a steel spoon
29. 29.True or false: an electric toy car mainly gives out light. (a) True (b) False
30. 30.True or false: an electric drill mainly gives out light. (a) True (b) False
31. 31.True or false: a doorbell mainly makes sound. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) take cells out after use (b) use small battery cells (c) touch a switch when wet (d) fly kites in open fields
33. 33.🔋 3 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
34. 34.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
35. 35.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a reed switch (c) a tilt switch (d) a push button
36. 36.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 5 is taken out of its holder. Does bulb 2 glow? (a) No (b) Yes
37. 37.Which drawing is the symbol for a voltmeter? (a) one tall, one short bar (b) a circle with V inside (c) a circle with A inside (d) two or more cell symbols
38. 38.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) bulb (c) diode (d) junction
39. 39.🔋 How many 1.5 V cells must be joined in series to give 9 V?
40. 40.Which of these is safe? (a) poke things in a socket (b) fly a kite near wires (c) stay away from pylons (d) open a phone charger

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