Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 325 · 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 motor? (a) two equal parallel lines (b) a circle with M inside (c) one tall, one short bar (d) a circle with a cross
2. 2.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) each gets full voltage (c) to save copper only (d) so all go off together
3. 3.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
4. 4.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) straight lines (c) little stars (d) wavy lines
5. 5.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a metal paper clip (b) a steel coin (c) a safety pin (d) a cotton thread
7. 7.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) LED (b) motor (c) cell (d) resistor
8. 8.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) dust particles (d) photons
9. 9.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) the same voltage (d) half the voltage
10. 10.What does a reed switch do? (a) works only while pressed (b) closes near a magnet (c) stays where you flip it (d) slides side to side
11. 11.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a plug top (b) a fuse or MCB (c) a bulb (d) a long wire
12. 12.What does a tilt switch do? (a) works only while pressed (b) flips up or down (c) springs back when let go (d) closes when tipped over
13. 13.True or false: to touch a switch when wet is not safe. (a) True (b) False
14. 14.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
15. 15.🔍 Which is the odd one out? (a) climb an electric pole (b) throw cells in a fire (c) keep drinks far away (d) fly a kite near wires
16. 16.True or false: a dot where wires meet is the symbol for a capacitor. (a) False (b) True
17. 17.Which of these is an insulator? (a) a steel coin (b) an iron nail (c) a dry cork (d) a copper wire
18. 18.True or false: a night lamp mainly gives out light. (a) True (b) False
19. 19.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
20. 20.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) capacitor (b) bulb (c) cell (d) diode
21. 21.🔋 How many 1.2 V cells must be joined in series to give 6 V?
22. 22.Which of these mainly makes movement? (a) an LED lamp (b) a tube light (c) a mixer grinder (d) a school bell
23. 23.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) − (negative) (b) + (positive)
24. 24.True or false: a rubber band is an insulator. (a) True (b) False
25. 25.True or false: a line lifted at a gap is the symbol for a cell. (a) True (b) False
26. 26.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
27. 27.True or false: a mixer grinder mainly makes movement. (a) True (b) False
28. 28.Which of these is an insulator? (a) a copper wire (b) a brass key (c) a steel spoon (d) a ceramic cup
29. 29.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) bulbs share the voltage
30. 30.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
31. 31.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) makes electricity (c) stores current (d) changes the voltage
32. 32.Which drawing is the symbol for a battery? (a) a line lifted at a gap (b) a circle with V inside (c) a straight line (d) many long-short pairs
33. 33.💡 4 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
34. 34.🔌 Which metal is used for most electric wires at home? (a) copper (b) rubber (c) glass (d) plastic
35. 35.🔍 Which is the odd one out? (a) a metal paper clip (b) a brass key (c) a plastic ruler (d) a graphite rod
36. 36.True or false: a cotton thread is an insulator. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a table fan (b) a loudspeaker (c) an electric toy car (d) a ceiling fan
38. 38.🔍 Which is the odd one out? (a) a doorbell (b) a ceiling fan (c) a school bell (d) a siren
39. 39.🔘 Which kind of switch closes when tipped over? (a) a reed switch (b) a tilt switch (c) a toggle switch (d) a push button
40. 40.True or false: to keep drinks far away is safe. (a) False (b) True

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids