Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 710 · 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.🔋 How many 1.5 V cells must be joined in series to give 4.5 V?
2. 2.What does a slide switch do? (a) springs back when let go (b) closes near a magnet (c) works only while pressed (d) slides side to side
3. 3.Which of these gives us electricity? (a) a washing machine (b) a computer (c) a power station (d) a refrigerator
4. 4.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
5. 5.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
6. 6.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) Yes (b) No
7. 7.Which drawing is the symbol for a junction? (a) triangle, bar and arrows (b) a small empty box (c) triangle against a bar (d) a dot where wires meet
8. 8.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
9. 9.🔍 Which is the odd one out? (a) an electric iron (b) a room heater (c) a water heater (d) an exhaust fan
10. 10.🔋 How many 3 V cells must be joined in series to give 6 V?
11. 11.🔍 Which is the odd one out? (a) throw cells in a fire (b) use mains for a project (c) take cells out after use (d) touch a switch when wet
12. 12.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) wind energy (d) light energy
13. 13.Which of these means the circuit is closed? (a) the switch is ON (b) the switch is OFF (c) a wire has come loose (d) a cell is taken out
14. 14.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
15. 15.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) bulb (b) resistor (c) diode (d) switch
16. 16.🔋 A 9 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
17. 17.🔦 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) No (b) Yes
18. 18.Which of these is not safe? (a) touch a switch when wet (b) stop if a part gets hot (c) fly kites in open fields (d) keep drinks far away
19. 19.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) motor (b) junction (c) bulb (d) ammeter
20. 20.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) Yes (b) No
21. 21.Which of these uses electricity? (a) a cell (b) a power station (c) a television (d) a bicycle dynamo
22. 22.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) Yes (b) No
23. 23.True or false: a ceiling fan mainly makes movement. (a) True (b) False
24. 24.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) wavy lines (d) dotted circles
25. 25.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) wire (b) motor (c) ammeter (d) battery
26. 26.True or false: a steel spoon is a conductor. (a) False (b) True
27. 27.Which of these mainly gives out heat? (a) a siren (b) a toaster (c) a doorbell (d) a night lamp
28. 28.💡 5 identical bulbs are joined in series with a 7.5 V battery (ideal wires). How many volts does each bulb get? =
29. 29.Which of these means the circuit is closed? (a) a cell is taken out (b) the loop is complete (c) the bulb is unscrewed (d) a wire has come loose
30. 30.What does a toggle switch do? (a) closes when tipped over (b) stays where you flip it (c) springs back when let go (d) closes near a magnet
31. 31.Which of these is true of a parallel circuit? (a) used in house wiring (b) a break stops every bulb (c) a single current path (d) one bulb out, all go out
32. 32.⚡ A fan changes electrical energy mainly into which kind of energy? (a) movement energy (b) sound energy (c) light energy (d) chemical energy
33. 33.💡 4 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. Does bulb 3 glow? (a) No (b) Yes
34. 34.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a plug top (b) a fuse or MCB (c) a long wire (d) a bulb
35. 35.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
36. 36.True or false: a push button springs back when let go. (a) False (b) True
37. 37.Which of these is safe? (a) touch a fallen wire (b) climb an electric pole (c) throw cells in a fire (d) build with an adult near
38. 38.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
39. 39.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
40. 40.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) No (b) Yes

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