Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 10 · 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.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
2. 2.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
3. 3.True or false: a table fan mainly makes movement. (a) True (b) False
4. 4.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
5. 5.🔍 Which is the odd one out? (a) a siren (b) a buzzer (c) a school bell (d) an electric toy car
6. 6.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) when either is ON (b) only when both are ON (c) never (d) only when both are OFF
7. 7.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) a wire is cut (d) all wires are joined
8. 8.What does a reed switch do? (a) closes near a magnet (b) flips up or down (c) springs back when let go (d) closes when tipped over
9. 9.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) bury them in soil (d) throw them in a fire
10. 10.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) friction (c) sound (d) electric current
11. 11.🔌 Is a metal paper clip a conductor or an insulator? (a) an insulator (b) a conductor
12. 12.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
13. 13.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) a cell is taken out (d) the loop is complete
14. 14.🔋 3 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)? =
15. 15.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
16. 16.🔍 Which is the odd one out? (a) dry your hands first (b) stay away from pylons (c) take cells out after use (d) poke things in a socket
17. 17.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 230 V (c) 15 V (d) 0.5 V
18. 18.Which of these gives us electricity? (a) an air conditioner (b) a water pump (c) a bicycle dynamo (d) a refrigerator
19. 19.💡 3 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
20. 20.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a plastic ruler. Does the bulb glow? (a) No (b) Yes
21. 21.Which of these mainly makes movement? (a) a buzzer (b) a loudspeaker (c) a ceiling fan (d) an electric kettle
22. 22.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
23. 23.🔦 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 a cotton thread. Does the bulb glow? (a) No (b) Yes
24. 24.⚡ What does an electric iron mainly change electricity into? (a) heat (b) sound (c) movement (d) light
25. 25.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
26. 26.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) dust particles (c) photons (d) electrons
27. 27.Which of these gives us electricity? (a) a refrigerator (b) a television (c) a mobile phone (d) a generator
28. 28.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they all go out (c) they get dimmer (d) they keep glowing
29. 29.What does a push button do? (a) stays where you flip it (b) closes when tipped over (c) flips up or down (d) springs back when let go
30. 30.Which of these is true of a series circuit? (a) a break stops every bulb (b) one out, the rest glow (c) own switch for each bulb (d) many paths for current
31. 31.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
32. 32.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a conductor (c) a switch that is ON (d) an insulator
33. 33.What does a toggle switch do? (a) closes near a magnet (b) slides side to side (c) stays where you flip it (d) works only while pressed
34. 34.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) to save copper only (c) each gets full voltage (d) so all go off together
35. 35.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
36. 36.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
37. 37.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 9 V (c) 12 V (d) 1.5 V
38. 38.💡 2 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. How many bulbs glow?
39. 39.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) wind energy
40. 40.🔘 Which kind of switch works only while pressed? (a) a tilt switch (b) a toggle switch (c) a push button (d) a slide switch

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