Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 370 · 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.🔌 Most metals are good … (a) conductors (b) batteries (c) insulators (d) magnets only
2. 2.True or false: triangle, bar and arrows is the symbol for an LED. (a) False (b) True
3. 3.True or false: an electric drill mainly makes movement. (a) False (b) True
4. 4.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) sound energy (c) chemical energy (d) light energy
5. 5.⚡ What does a rice cooker mainly change electricity into? (a) heat (b) light (c) movement (d) sound
6. 6.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a tilt switch (c) a slide switch (d) a reed switch
7. 7.True or false: to poke things in a socket is safe. (a) False (b) True
8. 8.Which of these means the circuit is closed? (a) a wire has come loose (b) the switch is OFF (c) all wires are joined (d) a cell is taken out
9. 9.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a wooden stick across the gap. Does the bulb glow? (a) Yes (b) No
11. 11.True or false: a dry cork is an insulator. (a) True (b) False
12. 12.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) the loop is complete (d) a wire has come loose
13. 13.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
14. 14.🔍 Which is the odd one out? (a) a water heater (b) a night lamp (c) a rice cooker (d) an electric kettle
15. 15.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a reed switch (c) a slide switch (d) a push button
16. 16.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) half the voltage (d) no voltage
17. 17.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
18. 18.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
19. 19.Which of these gives us electricity? (a) a washing machine (b) a wind turbine (c) a water pump (d) an air conditioner
20. 20.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
21. 21.🔋 How many 3 V cells must be joined in series to give 18 V?
22. 22.💡 3 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. How many bulbs glow?
23. 23.🔍 Which is the odd one out? (a) open a phone charger (b) fly a kite near wires (c) keep drinks far away (d) climb an electric pole
24. 24.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
25. 25.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
26. 26.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
27. 27.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) neither line (d) the shorter line
28. 28.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
29. 29.Which of these uses electricity? (a) a television (b) a generator (c) a cell (d) a solar panel
30. 30.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic is a conductor (c) to make them heavy (d) plastic makes current
31. 31.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) a break stops every bulb (d) own switch for each bulb
32. 32.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) an insulator (c) a conductor (d) a cell
33. 33.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
34. 34.✏️ In a circuit diagram, which part is drawn as a straight line? (a) battery (b) cell (c) resistor (d) wire
35. 35.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
36. 36.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
37. 37.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
38. 38.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
39. 39.Which of these is safe? (a) keep drinks far away (b) open a phone charger (c) fly a kite near wires (d) touch a switch when wet
40. 40.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False

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