Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 607 · 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: “own switch for each bulb” is true of a series circuit. (a) True (b) False
2. 2.✏️ In a circuit diagram, which part is drawn as a straight line? (a) wire (b) capacitor (c) battery (d) junction
3. 3.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
4. 4.🔦 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 aluminium foil. Does the bulb glow? (a) No (b) Yes
5. 5.⚠️ 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 short circuit (d) a safe circuit
6. 6.🔋 8 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
7. 7.True or false: one tall, one short bar is the symbol for a diode. (a) True (b) False
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) Yes (b) No
9. 9.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
10. 10.True or false: to take cells out after use is safe. (a) True (b) False
11. 11.What does a tilt switch do? (a) closes when tipped over (b) slides side to side (c) flips up or down (d) springs back when let go
12. 12.Which of these is an insulator? (a) an iron nail (b) a metal paper clip (c) a paper strip (d) aluminium foil
13. 13.🔍 Which is the odd one out? (a) dry your hands first (b) build with an adult near (c) keep drinks far away (d) use mains for a project
14. 14.What does a toggle switch do? (a) closes when tipped over (b) works only while pressed (c) closes near a magnet (d) stays where you flip it
15. 15.True or false: to touch a switch when wet is safe. (a) False (b) True
16. 16.🔦 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 dry cork. Does the bulb glow? (a) No (b) Yes
17. 17.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they all go out (c) they explode (d) they keep glowing
18. 18.Which of these mainly gives out light? (a) a table fan (b) an electric iron (c) a rice cooker (d) an LED lamp
19. 19.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) chemical energy (c) light energy (d) wind energy
20. 20.Which of these mainly gives out light? (a) a toaster (b) an electric iron (c) an electric toy car (d) a night lamp
21. 21.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
22. 22.⚡ What does an LED lamp mainly change electricity into? (a) movement (b) heat (c) light (d) sound
23. 23.💡 2 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
24. 24.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) a single current path (c) one bulb out, all go out (d) one out, the rest glow
25. 25.Which of these mainly gives out heat? (a) a street light (b) a traffic signal (c) a school bell (d) an electric kettle
26. 26.🔋 What is a battery? (a) a kind of bulb (b) two or more cells joined (c) a switch with a lid (d) one single wire
27. 27.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes
28. 28.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
29. 29.True or false: a metal paper clip is a conductor. (a) True (b) False
30. 30.⚡ What does a loudspeaker mainly change electricity into? (a) movement (b) heat (c) sound (d) light
31. 31.⚡ What does an electric drill mainly change electricity into? (a) heat (b) sound (c) light (d) movement
32. 32.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
33. 33.⚡ What does a torch mainly change electricity into? (a) sound (b) heat (c) movement (d) light
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) bulb (c) ammeter (d) resistor
35. 35.Which of these is a conductor? (a) a steel coin (b) a plastic ruler (c) a rubber band (d) a dry cork
36. 36.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
37. 37.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) an iron nail (b) a steel coin (c) a plastic ruler (d) a copper wire
39. 39.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
40. 40.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False

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