Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 339 · 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 is a battery? (a) a kind of bulb (b) two or more cells joined (c) a switch with a lid (d) one single wire
2. 2.⚠️ 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
3. 3.💡 2 identical bulbs are joined in parallel across a 12 V battery (ideal wires). How many volts does each bulb get? =
4. 4.Which of these is an insulator? (a) a safety pin (b) aluminium foil (c) a woollen thread (d) a steel coin
5. 5.🔋 6 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
6. 6.⚡ What does a room heater mainly change electricity into? (a) movement (b) heat (c) light (d) sound
7. 7.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) bulbs share the voltage (d) many paths for current
8. 8.🔋 Cells joined + to − in a row (series) give … (a) no voltage (b) a bigger voltage (c) the same voltage (d) a smaller voltage
9. 9.🔍 Which is the odd one out? (a) touch a switch when wet (b) use a cable with cuts (c) build with an adult near (d) throw cells in a fire
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) switch (b) ammeter (c) battery (d) voltmeter
11. 11.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
12. 12.🔋 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)? =
13. 13.🔦 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
14. 14.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
15. 15.Which of these is safe? (a) poke things in a socket (b) fly a kite near wires (c) use mains for a project (d) fly kites in open fields
16. 16.True or false: a dry cork is a conductor. (a) False (b) True
17. 17.What does a tilt switch do? (a) springs back when let go (b) flips up or down (c) closes when tipped over (d) works only while pressed
18. 18.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
19. 19.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a push button (c) a reed switch (d) a tilt switch
20. 20.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
21. 21.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a series circuit (c) a closed circuit (d) an open circuit
22. 22.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
23. 23.🔘 Which kind of switch closes near a magnet? (a) a tilt switch (b) a slide switch (c) a reed switch (d) a push button
24. 24.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
25. 25.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) a line lifted at a gap (c) many long-short pairs (d) two equal parallel lines
26. 26.Which of these mainly gives out heat? (a) an electric kettle (b) an electric drill (c) an exhaust fan (d) an LED lamp
27. 27.Which of these uses electricity? (a) a battery (b) a computer (c) a power station (d) a solar panel
28. 28.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
29. 29.🔦 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 paper strip. Does the bulb glow? (a) Yes (b) No
30. 30.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) never (c) when either is ON (d) when both are OFF
31. 31.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) plastic makes current (c) to make them heavy (d) plastic is an insulator
32. 32.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
33. 33.Which of these means the circuit is open? (a) the loop is complete (b) all wires are joined (c) a wire has come loose (d) the switch is ON
34. 34.True or false: a loudspeaker mainly makes sound. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) stop if a part gets hot (b) climb an electric pole (c) poke things in a socket (d) open a phone charger
36. 36.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) No (b) Yes
37. 37.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) True (b) False
38. 38.What does a toggle switch do? (a) works only while pressed (b) slides side to side (c) flips up or down (d) closes near a magnet
39. 39.True or false: “a single current path” is true of a series circuit. (a) True (b) False
40. 40.True or false: a traffic signal mainly gives out light. (a) False (b) True

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