Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 716 · 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.Which drawing is the symbol for a cell? (a) one tall, one short bar (b) many long-short pairs (c) a circle with a cross (d) two equal parallel lines
2. 2.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
3. 3.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
4. 4.Which of these means the circuit is closed? (a) the switch is ON (b) the switch is OFF (c) a wire is cut (d) the bulb is unscrewed
5. 5.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
6. 6.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
7. 7.⚡ What does a doorbell mainly change electricity into? (a) sound (b) light (c) heat (d) movement
8. 8.🔍 Which is the odd one out? (a) dry your hands first (b) open a phone charger (c) take cells out after use (d) stop if a part gets hot
9. 9.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
10. 10.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) only when both are OFF (c) never (d) when either is ON
11. 11.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
12. 12.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) False (b) True
13. 13.What does a push button do? (a) works only while pressed (b) closes when tipped over (c) stays where you flip it (d) closes near a magnet
14. 14.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
15. 15.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) in parallel (c) not joined (d) by Wi-Fi
16. 16.🔍 Which is the odd one out? (a) a wooden stick (b) a glass marble (c) a plastic straw (d) a safety pin
17. 17.Which of these is an insulator? (a) a steel coin (b) a copper wire (c) aluminium foil (d) a plastic straw
18. 18.⚡ What does a mixer grinder mainly change electricity into? (a) movement (b) sound (c) heat (d) light
19. 19.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is OFF. Does the bulb glow? (a) No (b) Yes
20. 20.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a plug top (c) a bulb (d) a fuse or MCB
21. 21.Which drawing is the symbol for a wire? (a) a dot where wires meet (b) a circle with A inside (c) a straight line (d) a circle with M inside
22. 22.What does a slide switch do? (a) closes when tipped over (b) slides side to side (c) stays where you flip it (d) works only while pressed
23. 23.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) so all go off together (d) each gets full voltage
24. 24.True or false: if the loop is complete, the circuit is open and no current flows. (a) True (b) False
25. 25.True or false: a toggle switch flips up or down. (a) False (b) True
26. 26.True or false: a slide switch closes when tipped over. (a) True (b) False
27. 27.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
28. 28.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
29. 29.Which of these is not safe? (a) build with an adult near (b) dry your hands first (c) touch a switch when wet (d) stop if a part gets hot
30. 30.True or false: “one out, the rest glow” is true of a parallel circuit. (a) True (b) False
31. 31.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a tilt switch (c) a push button (d) a toggle switch
32. 32.Which of these is safe? (a) use a cable with cuts (b) touch a switch when wet (c) dry your hands first (d) fly a kite near wires
33. 33.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
34. 34.True or false: to touch a fallen wire is not safe. (a) False (b) True
35. 35.Which of these is not safe? (a) dry your hands first (b) take cells out after use (c) touch a fallen wire (d) stay away from pylons
36. 36.True or false: to keep drinks far away is safe. (a) True (b) False
37. 37.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) No (b) Yes
38. 38.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
39. 39.🔘 A bulb and a cell are joined through 4 switches on 4 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
40. 40.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line

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