Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 442 · 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.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) bulb (b) switch (c) resistor (d) capacitor
2. 2.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
3. 3.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
4. 4.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
5. 5.💡 6 identical bulbs are in parallel and each one takes 0.5 A. What total current (in amperes) comes from the battery? =
6. 6.Which of these is a conductor? (a) a dry cork (b) a paper strip (c) a glass marble (d) a steel spoon
7. 7.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) bulb (b) diode (c) voltmeter (d) switch
8. 8.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
9. 9.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
10. 10.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) no voltage (c) the same voltage (d) a bigger voltage
11. 11.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. 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
12. 12.🔍 Which is the odd one out? (a) an iron nail (b) a graphite rod (c) a steel coin (d) a woollen thread
13. 13.🔋 5 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)? =
14. 14.🔋 A 12 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
15. 15.Which of these means the circuit is closed? (a) a cell is taken out (b) the bulb is unscrewed (c) the loop is complete (d) the switch is OFF
16. 16.🔍 Which is the odd one out? (a) fly kites in open fields (b) touch a switch when wet (c) take cells out after use (d) dry your hands first
17. 17.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
18. 18.Which of these is not safe? (a) fly a kite near wires (b) keep drinks far away (c) build with an adult near (d) stay away from pylons
19. 19.🔌 Is a plastic ruler a conductor or an insulator? (a) an insulator (b) a conductor
20. 20.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in series (d) in parallel
21. 21.True or false: a circle with M inside is the symbol for a junction. (a) True (b) False
22. 22.🔦 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
23. 23.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a tilt switch (c) a reed switch (d) a toggle switch
24. 24.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
25. 25.True or false: to fly kites in open fields is not safe. (a) True (b) False
26. 26.Which of these gives us electricity? (a) a washing machine (b) a bicycle dynamo (c) a computer (d) a water pump
27. 27.What does a push button do? (a) closes when tipped over (b) closes near a magnet (c) springs back when let go (d) slides side to side
28. 28.Which of these is a conductor? (a) a wooden stick (b) a paper strip (c) a brass key (d) a woollen thread
29. 29.True or false: an LED lamp mainly makes sound. (a) False (b) True
30. 30.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
31. 31.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) sound energy (b) light energy (c) movement energy (d) chemical energy
32. 32.True or false: to touch a fallen wire is safe. (a) False (b) True
33. 33.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
34. 34.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
35. 35.🔍 Which is the odd one out? (a) a toaster (b) a water heater (c) a ceiling fan (d) an electric iron
36. 36.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a safe circuit (c) a short circuit (d) a parallel circuit
37. 37.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) junction (b) motor (c) bulb (d) voltmeter
38. 38.🔦 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 woollen thread. Does the bulb glow? (a) No (b) Yes
39. 39.💡 5 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
40. 40.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)

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