Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 98 · 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.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are OFF (c) only when both are ON (d) when either is ON
2. 2.Which of these is an insulator? (a) a steel coin (b) aluminium foil (c) a wooden stick (d) a metal paper clip
3. 3.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
4. 4.Which of these is a conductor? (a) a glass marble (b) a plastic ruler (c) a woollen thread (d) a safety pin
5. 5.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a plug top (b) a fuse or MCB (c) a bulb (d) a long wire
6. 6.Which of these is true of a series circuit? (a) a single current path (b) many paths for current (c) one out, the rest glow (d) used in house wiring
7. 7.True or false: a reed switch slides side to side. (a) False (b) True
8. 8.True or false: a buzzer mainly gives out light. (a) True (b) False
9. 9.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
10. 10.Which of these mainly makes movement? (a) an electric iron (b) a table fan (c) a doorbell (d) a street light
11. 11.Which of these is an insulator? (a) a rubber band (b) an iron nail (c) a graphite rod (d) a steel coin
12. 12.Which drawing is the symbol for a wire? (a) a straight line (b) a long and a short line (c) two or more cell symbols (d) a circle with a cross
13. 13.💡 2 identical bulbs are joined in series with a 2 V battery (ideal wires). How many volts does each bulb get? =
14. 14.🔦 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) No (b) Yes
15. 15.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) wire (b) switch (c) resistor (d) battery
16. 16.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
17. 17.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) wind energy (c) sound energy (d) chemical energy
18. 18.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
19. 19.Which of these gives us electricity? (a) a water pump (b) a washing machine (c) a solar panel (d) a television
20. 20.Which of these is safe? (a) touch a switch when wet (b) poke things in a socket (c) climb an electric pole (d) fly kites in open fields
21. 21.🔍 Which is the odd one out? (a) a tube light (b) a torch (c) an LED lamp (d) a toaster
22. 22.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
23. 23.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
24. 24.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 5 glow? (a) No (b) Yes
25. 25.Which of these uses electricity? (a) a solar panel (b) a wind turbine (c) a computer (d) a battery
26. 26.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) sound energy (c) chemical energy (d) movement energy
27. 27.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they get dimmer (c) they all go out (d) they keep glowing
28. 28.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
29. 29.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) a magnet (c) friction (d) sound
30. 30.🔋 How many 2 V cells must be joined in series to give 6 V?
31. 31.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) Yes (b) No
32. 32.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a smaller voltage (d) a bigger voltage
33. 33.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.Which drawing is the symbol for an ammeter? (a) triangle against a bar (b) a circle with A inside (c) a plain rectangle (d) a dot where wires meet
35. 35.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
36. 36.⚡ What does a street light mainly change electricity into? (a) movement (b) light (c) heat (d) sound
37. 37.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
38. 38.🔘 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 OFF and C is ON. Does the bulb glow? (a) Yes (b) No
39. 39.🔁 What must there be for a current to flow? (a) a broken path (b) a plastic gap (c) one loose end (d) a complete loop
40. 40.Which drawing is the symbol for a voltmeter? (a) one tall, one short bar (b) two or more cell symbols (c) a circle with V inside (d) two equal parallel lines

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