Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 372 · 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.True or false: a wooden stick is a conductor. (a) True (b) False
2. 2.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
3. 3.True or false: a line lifted at a gap is the symbol for a cell. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) open a phone charger (b) use mains for a project (c) stop if a part gets hot (d) use a cable with cuts
5. 5.True or false: an electric drill mainly makes sound. (a) True (b) False
6. 6.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
7. 7.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
8. 8.True or false: an electric drill mainly makes movement. (a) False (b) True
9. 9.🔘 A bulb and a cell are joined through 2 switches on 2 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
10. 10.True or false: an electric toy car mainly makes movement. (a) False (b) True
11. 11.🔌 A gap of dry air between two wires acts as … (a) a cell (b) a switch that is ON (c) an insulator (d) a conductor
12. 12.💡 5 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 5 glow? (a) No (b) Yes
13. 13.Which of these is safe? (a) use small battery cells (b) use a cable with cuts (c) touch a fallen wire (d) throw cells in a fire
14. 14.💡 4 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. Does bulb 1 glow? (a) Yes (b) No
15. 15.⚡ What does a room heater mainly change electricity into? (a) light (b) sound (c) movement (d) heat
16. 16.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) a magnet (c) friction (d) electric current
17. 17.🔍 Which is the odd one out? (a) a toaster (b) a rice cooker (c) a buzzer (d) a water heater
18. 18.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
19. 19.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) one tall, one short bar (c) many long-short pairs (d) a circle with a cross
20. 20.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one (d) one for each bulb
21. 21.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
22. 22.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they explode (c) they get dimmer (d) they all go out
23. 23.Which drawing is the symbol for a diode? (a) a circle with A inside (b) two equal parallel lines (c) many long-short pairs (d) triangle against a bar
24. 24.🔍 Which is the odd one out? (a) a buzzer (b) a loudspeaker (c) an electric kettle (d) a siren
25. 25.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
26. 26.⚡ What does a mixer grinder mainly change electricity into? (a) movement (b) sound (c) heat (d) light
27. 27.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in parallel (c) in series (d) by Wi-Fi
28. 28.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a reed switch
29. 29.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
30. 30.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the metal tip (c) the bare end (d) the steel shaft
31. 31.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
32. 32.True or false: a slide switch stays where you flip it. (a) True (b) False
33. 33.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
34. 34.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
35. 35.Which of these means the circuit is open? (a) all wires are joined (b) a wire has come loose (c) the switch is ON (d) the loop is complete
36. 36.🔍 Which is the odd one out? (a) use mains for a project (b) use a cable with cuts (c) poke things in a socket (d) keep drinks far away
37. 37.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
38. 38.🔍 Which is the odd one out? (a) a mixer grinder (b) an electric toy car (c) an LED lamp (d) a ceiling fan
39. 39.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes

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