Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 527 · 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.💡 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
2. 2.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
3. 3.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
4. 4.True or false: aluminium foil is an insulator. (a) True (b) False
5. 5.⚡ What does a school bell mainly change electricity into? (a) heat (b) sound (c) movement (d) light
6. 6.🔌 Is a brass key a conductor or an insulator? (a) an insulator (b) a conductor
7. 7.🔍 Which is the odd one out? (a) a ceramic cup (b) a graphite rod (c) a steel spoon (d) a brass key
8. 8.🔁 What must there be for a current to flow? (a) a complete loop (b) a broken path (c) one loose end (d) a plastic gap
9. 9.Which of these is a conductor? (a) a brass key (b) a wooden stick (c) a paper strip (d) a rubber eraser
10. 10.⚡ What does an electric kettle mainly change electricity into? (a) light (b) heat (c) sound (d) movement
11. 11.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) switch (b) voltmeter (c) diode (d) junction
12. 12.🔍 Which is the odd one out? (a) touch a switch when wet (b) fly a kite near wires (c) build with an adult near (d) climb an electric pole
13. 13.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) the longer line (c) neither line (d) both lines
14. 14.🔍 Which is the odd one out? (a) stop if a part gets hot (b) fly kites in open fields (c) touch a switch when wet (d) keep drinks far away
15. 15.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is OFF, B is OFF, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
16. 16.🔍 Which is the odd one out? (a) a dry cork (b) a brass key (c) a steel spoon (d) an iron nail
17. 17.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 1 glow? (a) No (b) Yes
18. 18.🔍 Which is the odd one out? (a) a cotton thread (b) a dry cork (c) a ceramic cup (d) a steel coin
19. 19.True or false: if all wires are joined, the circuit is closed and current flows. (a) True (b) False
20. 20.True or false: on a cell, “the flat end” means the − (negative) end. (a) True (b) False
21. 21.True or false: on a cell, “usually the red wire” means the + (positive) end. (a) False (b) True
22. 22.True or false: a toggle switch works only while pressed. (a) True (b) False
23. 23.True or false: one tall, one short bar is the symbol for a voltmeter. (a) True (b) False
24. 24.⚡ What does a mixer grinder mainly change electricity into? (a) light (b) heat (c) sound (d) movement
25. 25.🔌 Which metal is used for most electric wires at home? (a) copper (b) plastic (c) glass (d) rubber
26. 26.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
27. 27.🔍 Which is the odd one out? (a) build with an adult near (b) use small battery cells (c) keep drinks far away (d) touch a fallen wire
28. 28.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
29. 29.Which drawing is the symbol for a capacitor? (a) a circle with M inside (b) two equal parallel lines (c) a long and a short line (d) a circle with V inside
30. 30.True or false: a toggle switch springs back when let go. (a) True (b) False
31. 31.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) a single current path (d) used in house wiring
32. 32.Which of these is an insulator? (a) a dry cork (b) a safety pin (c) aluminium foil (d) a brass key
33. 33.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
34. 34.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
35. 35.Which drawing is the symbol for a bulb? (a) a plain rectangle (b) a dot where wires meet (c) a circle with a cross (d) a straight line
36. 36.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
37. 37.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
38. 38.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) ammeter (b) voltmeter (c) resistor (d) battery
39. 39.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
40. 40.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) none (d) one

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