Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 767 · 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.What does a slide switch do? (a) flips up or down (b) springs back when let go (c) slides side to side (d) stays where you flip it
2. 2.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
3. 3.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
4. 4.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) a closed circuit (c) an open circuit (d) a full circuit
5. 5.True or false: to fly kites in open fields is safe. (a) False (b) True
6. 6.💡 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. Does bulb 2 glow? (a) Yes (b) No
7. 7.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) neither line (d) the shorter line
8. 8.🔦 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 ceramic cup. Does the bulb glow? (a) No (b) Yes
9. 9.🔌 Is a plastic straw a conductor or an insulator? (a) an insulator (b) a conductor
10. 10.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
11. 11.True or false: “used in house wiring” is true of a series circuit. (a) True (b) False
12. 12.True or false: a metal paper clip is an insulator. (a) True (b) False
13. 13.True or false: a ceiling fan mainly makes movement. (a) False (b) True
14. 14.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
15. 15.💡 Why is house wiring done in parallel? (a) so all go off together (b) to save copper only (c) each gets full voltage (d) to make bulbs dim
16. 16.🔍 Which is the odd one out? (a) use mains for a project (b) throw cells in a fire (c) fly kites in open fields (d) open a phone charger
17. 17.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) movement energy
18. 18.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
19. 19.🔍 Which is the odd one out? (a) a graphite rod (b) a woollen thread (c) an iron nail (d) a steel spoon
20. 20.Which of these is true of a series circuit? (a) own switch for each bulb (b) a break stops every bulb (c) many paths for current (d) one out, the rest glow
21. 21.True or false: a slide switch slides side to side. (a) False (b) True
22. 22.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) capacitor (b) wire (c) cell (d) resistor
23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a plastic straw (d) a copper wire
24. 24.What does a toggle switch do? (a) slides side to side (b) springs back when let go (c) closes near a magnet (d) flips up or down
25. 25.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
26. 26.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) dotted circles (c) little stars (d) wavy lines
27. 27.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 1.5 V (c) 15 V (d) 230 V
28. 28.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
29. 29.What does a tilt switch do? (a) works only while pressed (b) stays where you flip it (c) flips up or down (d) closes when tipped over
30. 30.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) resistor (c) switch (d) bulb
31. 31.Which drawing is the symbol for a wire? (a) a straight line (b) a dot where wires meet (c) two equal parallel lines (d) one tall, one short bar
32. 32.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
33. 33.Which of these is safe? (a) poke things in a socket (b) use mains for a project (c) use a cable with cuts (d) use small battery cells
34. 34.🔋 5 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a paper strip across the gap. Does the bulb glow? (a) No (b) Yes
36. 36.⚡ A fan changes electrical energy mainly into which kind of energy? (a) movement energy (b) light energy (c) chemical energy (d) sound energy
37. 37.💡 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. Does bulb 1 glow? (a) Yes (b) No
38. 38.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
39. 39.Which of these gives us electricity? (a) a refrigerator (b) a mobile phone (c) a bicycle dynamo (d) a washing machine
40. 40.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe

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