Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 234 · 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 safe? (a) fly a kite near wires (b) use small battery cells (c) use a cable with cuts (d) climb an electric pole
2. 2.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 12 V (c) 230 V (d) 9 V
3. 3.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) a break stops every bulb (c) many paths for current (d) a single current path
4. 4.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
5. 5.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
6. 6.Which drawing is the symbol for a capacitor? (a) triangle, bar and arrows (b) a dot where wires meet (c) two equal parallel lines (d) a circle with M inside
7. 7.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
8. 8.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) cell (b) LED (c) battery (d) diode
9. 9.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
10. 10.🔘 Which kind of switch closes when tipped over? (a) a push button (b) a toggle switch (c) a reed switch (d) a tilt switch
11. 11.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) in series (d) by Wi-Fi
12. 12.True or false: to fly a kite near wires is not safe. (a) False (b) True
13. 13.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
14. 14.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 230 V (d) 1.5 V
15. 15.🔋 How many 1.2 V cells must be joined in series to give 7.2 V?
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) a metal paper clip (c) a plastic ruler (d) a graphite rod
17. 17.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a short circuit (c) a parallel circuit (d) a safe circuit
18. 18.🔋 6 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
19. 19.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
20. 20.Which of these gives us electricity? (a) an air conditioner (b) a mobile phone (c) a television (d) a battery
21. 21.Which of these is true of a parallel circuit? (a) bulbs share the voltage (b) one bulb out, all go out (c) a single current path (d) one out, the rest glow
22. 22.⚡ A solar panel changes which kind of energy into electricity? (a) sound energy (b) light energy (c) chemical energy (d) wind energy
23. 23.Which of these is an insulator? (a) a cotton thread (b) a metal paper clip (c) a copper wire (d) a steel spoon
24. 24.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) water carries current (d) it spoils the paint
25. 25.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a reed switch (c) a push button (d) a toggle switch
26. 26.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) sound energy (c) light energy (d) movement energy
27. 27.Which of these is true of a series circuit? (a) one bulb out, all go out (b) one out, the rest glow (c) each gets the full volts (d) own switch for each bulb
28. 28.⚡ What does a siren mainly change electricity into? (a) sound (b) movement (c) heat (d) light
29. 29.Which of these mainly gives out light? (a) an electric kettle (b) an electric toy car (c) an electric iron (d) a torch
30. 30.True or false: “one out, the rest glow” is true of a parallel circuit. (a) False (b) True
31. 31.🔘 Which kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a slide switch (d) a tilt switch
32. 32.Which of these means the circuit is closed? (a) a wire is cut (b) the loop is complete (c) a cell is taken out (d) a wire has come loose
33. 33.What does a push button do? (a) flips up or down (b) springs back when let go (c) stays where you flip it (d) slides side to side
34. 34.⚡ What does an LED lamp mainly change electricity into? (a) heat (b) movement (c) sound (d) light
35. 35.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) ammeter (b) LED (c) voltmeter (d) junction
36. 36.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) sound energy (c) wind energy (d) nuclear energy
37. 37.💡 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
38. 38.True or false: triangle against a bar is the symbol for a resistor. (a) True (b) False
39. 39.🔘 When a switch is ON, the circuit is … (a) cut (b) broken (c) closed (d) open
40. 40.Which of these gives us electricity? (a) a cell (b) a water pump (c) a television (d) a mobile phone

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