Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 476 · 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 bulb and a cell are joined through 2 switches on 2 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?
2. 2.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) cell (b) bulb (c) ammeter (d) resistor
3. 3.⚡ What does a mixer grinder mainly change electricity into? (a) light (b) heat (c) movement (d) sound
4. 4.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
5. 5.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) one out, the rest glow (d) a single current path
6. 6.Which drawing is the symbol for a wire? (a) a straight line (b) a circle with M inside (c) two equal parallel lines (d) two or more cell symbols
7. 7.True or false: two or more cell symbols is the symbol for a battery. (a) False (b) True
8. 8.What does a toggle switch do? (a) closes near a magnet (b) springs back when let go (c) slides side to side (d) flips up or down
9. 9.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
10. 10.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
11. 11.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
12. 12.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) none (c) one (d) two
13. 13.True or false: a slide switch flips up or down. (a) False (b) True
14. 14.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
15. 15.💡 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. How many bulbs glow?
16. 16.Which of these is true of a series circuit? (a) one bulb out, all go out (b) used in house wiring (c) own switch for each bulb (d) one out, the rest glow
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) switch (b) bulb (c) junction (d) diode
18. 18.🔘 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 ON and C is ON. Does the bulb glow? (a) No (b) Yes
19. 19.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) diode (b) wire (c) bulb (d) cell
20. 20.Which of these means the circuit is open? (a) a wire has come loose (b) the loop is complete (c) all wires are joined (d) the switch is ON
21. 21.Which of these is a conductor? (a) a cotton thread (b) a plastic ruler (c) a dry cork (d) a graphite rod
22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a woollen thread across the gap. Does the bulb glow? (a) No (b) Yes
23. 23.True or false: a dot where wires meet is the symbol for a junction. (a) True (b) False
24. 24.Which of these is an insulator? (a) a steel spoon (b) an iron nail (c) a rubber band (d) aluminium foil
25. 25.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
26. 26.True or false: an electric kettle mainly makes sound. (a) False (b) True
27. 27.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
28. 28.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) wind energy (c) light energy (d) sound energy
29. 29.🔍 Which is the odd one out? (a) a graphite rod (b) an iron nail (c) a brass key (d) a cotton thread
30. 30.Which drawing is the symbol for an LED? (a) a circle with V inside (b) a dot where wires meet (c) many long-short pairs (d) triangle, bar and arrows
31. 31.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
33. 33.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
34. 34.🔘 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 ON. Does the bulb glow? (a) No (b) Yes
35. 35.💡 4 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
36. 36.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a toggle switch (c) a tilt switch (d) a reed switch
37. 37.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
38. 38.🔍 Which is the odd one out? (a) an electric kettle (b) a tube light (c) a night lamp (d) a torch
39. 39.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) half the voltage (d) the same voltage
40. 40.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False

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