Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 663 · 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.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) light energy (c) movement energy (d) chemical energy
2. 2.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) motor (c) battery (d) switch
3. 3.What does a tilt switch do? (a) springs back when let go (b) flips up or down (c) closes when tipped over (d) closes near a magnet
4. 4.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
5. 5.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
6. 6.🔋 5 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
7. 7.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
8. 8.True or false: a brass key is an insulator. (a) False (b) True
9. 9.Which of these mainly gives out heat? (a) a doorbell (b) an electric drill (c) a street light (d) an electric iron
10. 10.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
11. 11.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
12. 12.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a toggle switch (c) a slide switch (d) a reed switch
13. 13.Which of these is not safe? (a) use small battery cells (b) stay away from pylons (c) stop if a part gets hot (d) climb an electric pole
14. 14.True or false: a line lifted at a gap is the symbol for an ammeter. (a) True (b) False
15. 15.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) electrons (d) dust particles
16. 16.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
17. 17.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
18. 18.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
19. 19.True or false: a circle with V inside is the symbol for a battery. (a) False (b) True
20. 20.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) own switch for each bulb (c) bulbs share the voltage (d) a break stops every bulb
21. 21.Which of these is true of a series circuit? (a) used in house wiring (b) a break stops every bulb (c) many paths for current (d) one out, the rest glow
22. 22.What does a push button do? (a) flips up or down (b) stays where you flip it (c) works only while pressed (d) closes when tipped over
23. 23.⚡ What does a room heater mainly change electricity into? (a) heat (b) movement (c) sound (d) light
24. 24.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one (d) one for each bulb
25. 25.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
26. 26.🔘 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 ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
27. 27.Which of these means the circuit is open? (a) the loop is complete (b) all wires are joined (c) the switch is ON (d) the bulb is unscrewed
28. 28.💡 3 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
29. 29.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) junction (c) LED (d) capacitor
30. 30.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) little stars (c) wavy lines (d) straight lines
31. 31.⚡ What does a loudspeaker mainly change electricity into? (a) heat (b) movement (c) sound (d) light
32. 32.True or false: to throw cells in a fire is safe. (a) False (b) True
33. 33.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a bulb (c) a fuse or MCB (d) a plug top
34. 34.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the plastic handle (d) the bare end
35. 35.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a circle with V inside (c) two or more cell symbols (d) a small empty box
36. 36.Which of these is safe? (a) take cells out after use (b) touch a fallen wire (c) open a phone charger (d) touch a switch when wet
37. 37.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
38. 38.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) many paths for current (c) one bulb out, all go out (d) a break stops every bulb
39. 39.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
40. 40.⚡ What does a rice cooker mainly change electricity into? (a) light (b) sound (c) movement (d) heat

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