Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 679 · 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.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 9 V (c) 12 V (d) 230 V
2. 2.Which of these is a conductor? (a) a plastic straw (b) a glass marble (c) a rubber band (d) a steel spoon
3. 3.🔍 Which is the odd one out? (a) a steel coin (b) a copper wire (c) a safety pin (d) a dry cork
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) brighter (b) dimmer (c) the same
5. 5.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) dotted circles (b) wavy lines (c) little stars (d) straight lines
7. 7.🔘 When a switch is ON, the circuit is … (a) open (b) broken (c) cut (d) closed
8. 8.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
9. 9.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a plastic gap (d) a complete loop
10. 10.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a short circuit (c) a parallel circuit (d) an open circuit
11. 11.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) electrons (c) water drops (d) photons
12. 12.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
13. 13.True or false: a toggle switch works only while pressed. (a) False (b) True
14. 14.💡 3 identical bulbs are joined in series with a 4.5 V battery (ideal wires). How many volts does each bulb get? =
15. 15.True or false: a circle with M inside is the symbol for an LED. (a) True (b) False
16. 16.Which of these is an insulator? (a) a safety pin (b) a ceramic cup (c) aluminium foil (d) a steel coin
17. 17.🔗 Series or parallel circuit: “a break stops every bulb”? (a) series (b) parallel
18. 18.💡 6 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?
19. 19.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
20. 20.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) in series (c) by Wi-Fi (d) not joined
21. 21.Which drawing is the symbol for a motor? (a) a small empty box (b) a circle with M inside (c) two or more cell symbols (d) many long-short pairs
22. 22.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
23. 23.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
24. 24.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 3 glow? (a) Yes (b) No
25. 25.🔘 Two switches are in series. When does the bulb glow? (a) never (b) when either is ON (c) when both are ON (d) when both are OFF
26. 26.True or false: a safety pin is a conductor. (a) False (b) True
27. 27.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
28. 28.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) many paths for current (d) one bulb out, all go out
29. 29.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
30. 30.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
31. 31.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
32. 32.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they get dimmer (d) they all go out
33. 33.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
34. 34.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
35. 35.Which drawing is the symbol for a resistor? (a) a long and a short line (b) a circle with a cross (c) a plain rectangle (d) a circle with M inside
36. 36.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) quick and clear for all (c) to make it colourful (d) symbols are heavier
37. 37.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with M inside (d) two equal parallel lines
38. 38.Which of these mainly makes sound? (a) a toaster (b) a room heater (c) a school bell (d) a night lamp
39. 39.Which of these is an insulator? (a) an iron nail (b) a steel spoon (c) a wooden stick (d) aluminium foil
40. 40.🔍 Which is the odd one out? (a) touch a switch when wet (b) build with an adult near (c) throw cells in a fire (d) poke things in a socket

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