Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 84 · 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.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
2. 2.Which of these is not safe? (a) keep drinks far away (b) fly a kite near wires (c) dry your hands first (d) stop if a part gets hot
3. 3.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are ON (d) when both are OFF
4. 4.🔋 Identical cells side by side (in parallel) give … (a) double the voltage (b) half the voltage (c) no voltage (d) the same voltage
5. 5.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) one bulb out, all go out (d) own switch for each bulb
6. 6.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
7. 7.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
8. 8.💡 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?
9. 9.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) the same voltage (c) no voltage (d) a bigger voltage
10. 10.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 230 V (c) 0.5 V (d) 1.5 V
11. 11.True or false: “a break stops every bulb” is true of a series circuit. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) use a cable with cuts (b) poke things in a socket (c) keep drinks far away (d) touch a fallen wire
13. 13.🔘 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
14. 14.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) a break stops every bulb (d) used in house wiring
15. 15.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) diode (b) cell (c) LED (d) junction
16. 16.Which of these is safe? (a) touch a fallen wire (b) open a phone charger (c) touch a switch when wet (d) dry your hands first
17. 17.⚠️ Is it safe to fly kites in open fields? (a) not safe (b) safe
18. 18.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
19. 19.Which of these is safe? (a) fly a kite near wires (b) open a phone charger (c) build with an adult near (d) climb an electric pole
20. 20.Which of these is not safe? (a) use a cable with cuts (b) use small battery cells (c) build with an adult near (d) keep drinks far away
21. 21.🔋 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)? =
22. 22.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
23. 23.🔍 Which is the odd one out? (a) an electric kettle (b) a street light (c) an electric iron (d) a room heater
24. 24.🔦 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) Yes (b) No
25. 25.True or false: a graphite rod is a conductor. (a) True (b) False
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) junction (b) voltmeter (c) resistor (d) motor
27. 27.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
28. 28.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a fuse or MCB (c) a plug top (d) a bulb
29. 29.💡 In a series circuit, how many paths does the current have? (a) one for each bulb (b) two (c) one (d) none
30. 30.🔍 Which is the odd one out? (a) a copper wire (b) a brass key (c) aluminium foil (d) a wooden stick
31. 31.Which drawing is the symbol for a battery? (a) a circle with a cross (b) many long-short pairs (c) a long and a short line (d) a circle with A inside
32. 32.Which of these is safe? (a) fly kites in open fields (b) touch a switch when wet (c) throw cells in a fire (d) climb an electric pole
33. 33.True or false: to fly kites in open fields is not safe. (a) True (b) False
34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
35. 35.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
36. 36.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
37. 37.🔘 Which kind of switch closes near a magnet? (a) a reed switch (b) a slide switch (c) a push button (d) a toggle switch
38. 38.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
39. 39.🔋 Does a television give electricity or use electricity? (a) uses electricity (b) gives electricity
40. 40.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel

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