Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 700 · 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 does a mixer grinder mainly change electricity into? (a) heat (b) movement (c) light (d) sound
2. 2.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to save copper only (c) so all go off together (d) to make bulbs dim
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) little stars (d) wavy lines
4. 4.🔍 Which is the odd one out? (a) fly kites in open fields (b) take cells out after use (c) dry your hands first (d) poke things in a socket
5. 5.🔍 Which is the odd one out? (a) build with an adult near (b) fly a kite near wires (c) touch a switch when wet (d) poke things in a socket
6. 6.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
7. 7.Which of these is an insulator? (a) a steel coin (b) a metal paper clip (c) a safety pin (d) a rubber band
8. 8.Which of these is a conductor? (a) a paper strip (b) a cotton thread (c) a steel coin (d) a rubber eraser
9. 9.True or false: a rubber band is an insulator. (a) False (b) True
10. 10.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) neither line (d) the shorter line
11. 11.True or false: “used in house wiring” is true of a series circuit. (a) False (b) True
12. 12.💡 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) Yes (b) No
13. 13.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
14. 14.🔍 Which is the odd one out? (a) use a cable with cuts (b) use mains for a project (c) take cells out after use (d) fly a kite near wires
15. 15.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a trusted adult (c) a stranger online (d) a younger child
16. 16.True or false: to build with an adult near is not safe. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) a metal paper clip (c) a brass key (d) a paper strip
18. 18.Which drawing is the symbol for a cell? (a) a plain rectangle (b) one tall, one short bar (c) a line lifted at a gap (d) a dot where wires meet
19. 19.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
20. 20.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) many paths for current (d) one bulb out, all go out
21. 21.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
22. 22.🔁 Is the circuit closed or open if all wires are joined? (a) open (b) closed
23. 23.💡 A battery lights 4 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
24. 24.🔍 Which is the odd one out? (a) keep drinks far away (b) use a cable with cuts (c) fly kites in open fields (d) use small battery cells
25. 25.Which drawing is the symbol for an ammeter? (a) a circle with an X in it (b) many long-short pairs (c) two or more cell symbols (d) a circle with A inside
26. 26.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
27. 27.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
28. 28.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a push button (c) a slide switch (d) a toggle switch
29. 29.Which of these uses electricity? (a) a generator (b) a wind turbine (c) a power station (d) a mobile phone
30. 30.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 1 and 2 are taken out of their holders. How many bulbs glow?
31. 31.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) never (c) when both are ON (d) when either is ON
32. 32.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in series (c) not joined (d) in parallel
33. 33.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) bulbs share the voltage (c) own switch for each bulb (d) a break stops every bulb
34. 34.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) Yes (b) No
35. 35.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
36. 36.🔍 Which is the odd one out? (a) a room heater (b) an electric drill (c) an electric toy car (d) an exhaust fan
37. 37.True or false: on a cell, “the flat end” means the − (negative) end. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a rubber band (b) a copper wire (c) a steel spoon (d) a graphite rod
39. 39.Which of these means the circuit is open? (a) the bulb is unscrewed (b) the loop is complete (c) the switch is ON (d) all wires are joined
40. 40.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a parallel circuit (c) a safe circuit (d) a short circuit

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