Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 622 · 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.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
2. 2.What does a push button do? (a) slides side to side (b) closes when tipped over (c) closes near a magnet (d) works only while pressed
3. 3.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) Yes (b) No
4. 4.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
5. 5.Which of these means the circuit is closed? (a) a cell is taken out (b) all wires are joined (c) the bulb is unscrewed (d) the switch is OFF
6. 6.🔍 Which is the odd one out? (a) climb an electric pole (b) stay away from pylons (c) touch a switch when wet (d) open a phone charger
7. 7.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
8. 8.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a push button
9. 9.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
10. 10.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
11. 11.🔋 7 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)? =
12. 12.⚡ What do we call a flow of electric charge through a wire? (a) electric current (b) a magnet (c) sound (d) friction
13. 13.⚠️ Is it safe to use mains for a project? (a) not safe (b) safe
14. 14.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) False (b) True
15. 15.⚡ What does an electric iron mainly change electricity into? (a) light (b) movement (c) sound (d) heat
16. 16.True or false: aluminium foil is a conductor. (a) True (b) False
17. 17.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
18. 18.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
19. 19.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) not joined (d) by Wi-Fi
20. 20.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
21. 21.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) switch (b) motor (c) resistor (d) diode
22. 22.🔍 Which is the odd one out? (a) an iron nail (b) a brass key (c) aluminium foil (d) a rubber band
23. 23.🔌 A gap of dry air between two wires acts as … (a) an insulator (b) a cell (c) a conductor (d) a switch that is ON
24. 24.🔍 Which is the odd one out? (a) a room heater (b) an electric kettle (c) an electric iron (d) a school bell
25. 25.💡 4 identical bulbs are joined in series with a 16 V battery (ideal wires). How many volts does each bulb get? =
26. 26.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) a small empty box (c) two equal parallel lines (d) a circle with A inside
27. 27.Which drawing is the symbol for a battery? (a) a circle with a cross (b) two or more cell symbols (c) triangle, bar and arrows (d) a circle with V inside
28. 28.True or false: to open a phone charger is safe. (a) False (b) True
29. 29.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
30. 30.🔗 Series or parallel circuit: “used in house wiring”? (a) parallel (b) series
31. 31.True or false: a circle with a cross is the symbol for a motor. (a) False (b) True
32. 32.💡 4 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
33. 33.💡 In a series circuit, how many paths does the current have? (a) none (b) one (c) one for each bulb (d) two
34. 34.🔌 Is a metal paper clip a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.Which of these mainly makes movement? (a) a buzzer (b) an exhaust fan (c) a torch (d) a loudspeaker
36. 36.True or false: to keep drinks far away is not safe. (a) True (b) False
37. 37.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
38. 38.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
39. 39.Which of these is a conductor? (a) a woollen thread (b) a brass key (c) a dry cork (d) a cotton thread
40. 40.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) one tall, one short bar (c) a straight line (d) a circle with M inside

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