Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 942 · 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 of these is an insulator? (a) a steel coin (b) a plastic straw (c) a metal paper clip (d) a copper wire
2. 2.True or false: to climb an electric pole is not safe. (a) True (b) False
3. 3.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a tilt switch (c) a toggle switch (d) a reed switch
4. 4.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
5. 5.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
6. 6.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one bulb out, all go out (c) one out, the rest glow (d) a single current path
7. 7.💡 A battery lights 3 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
8. 8.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) motor (b) bulb (c) cell (d) capacitor
9. 9.Which of these is safe? (a) use a cable with cuts (b) throw cells in a fire (c) open a phone charger (d) take cells out after use
10. 10.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) a single current path (d) used in house wiring
11. 11.🔋 5 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
12. 12.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
13. 13.💡 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
14. 14.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) straight lines (d) dotted circles
15. 15.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one for each bulb (d) one
16. 16.Which of these is safe? (a) touch a switch when wet (b) use small battery cells (c) poke things in a socket (d) use a cable with cuts
17. 17.Which of these is true of a series circuit? (a) a single current path (b) used in house wiring (c) many paths for current (d) one out, the rest glow
18. 18.⚡ What does a night lamp mainly change electricity into? (a) light (b) sound (c) heat (d) movement
19. 19.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
20. 20.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a reed switch (c) a slide switch (d) a toggle switch
21. 21.🔍 Which is the odd one out? (a) poke things in a socket (b) open a phone charger (c) climb an electric pole (d) build with an adult near
22. 22.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
23. 23.True or false: if the switch is ON, the circuit is open and no current flows. (a) False (b) True
24. 24.True or false: a safety pin is a conductor. (a) True (b) False
25. 25.What does a tilt switch do? (a) closes when tipped over (b) works only while pressed (c) flips up or down (d) closes near a magnet
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a safety pin (c) a copper wire (d) a plastic ruler
27. 27.⚡ What does an exhaust fan mainly change electricity into? (a) light (b) sound (c) heat (d) movement
28. 28.🔋 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
29. 29.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. How many bulbs glow?
30. 30.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a plain rectangle (c) two or more cell symbols (d) a dot where wires meet
31. 31.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
32. 32.🔍 Which is the odd one out? (a) dry your hands first (b) climb an electric pole (c) keep drinks far away (d) fly kites in open fields
33. 33.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) sound (c) friction (d) electric current
34. 34.True or false: a table fan mainly makes movement. (a) False (b) True
35. 35.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to save copper only (d) to make bulbs dim
36. 36.⚠️ Who should be with you when you build a circuit? (a) a trusted adult (b) a stranger online (c) a younger child (d) nobody
37. 37.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they explode (c) they keep glowing (d) they all go out
38. 38.Which of these mainly gives out light? (a) a tube light (b) a doorbell (c) an electric toy car (d) a table fan
39. 39.What does a push button do? (a) springs back when let go (b) flips up or down (c) closes near a magnet (d) slides side to side
40. 40.Which of these means the circuit is closed? (a) a wire has come loose (b) a cell is taken out (c) a wire is cut (d) the loop is complete

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