Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 266 · 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 a conductor? (a) a ceramic cup (b) a steel spoon (c) a dry cork (d) a paper strip
2. 2.🔦 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) Yes (b) No
3. 3.True or false: if the switch is OFF, the circuit is closed and current flows. (a) False (b) True
4. 4.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
5. 5.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
6. 6.🔋 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)? =
7. 7.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
8. 8.⚡ What does a buzzer mainly change electricity into? (a) light (b) movement (c) sound (d) heat
9. 9.Which of these gives us electricity? (a) a washing machine (b) a refrigerator (c) a television (d) a generator
10. 10.True or false: if all wires are joined, the circuit is open and no current flows. (a) False (b) True
11. 11.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
12. 12.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they keep glowing (b) they all go out (c) they get dimmer (d) they explode
13. 13.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) voltmeter (b) battery (c) capacitor (d) motor
14. 14.🔍 Which is the odd one out? (a) poke things in a socket (b) touch a switch when wet (c) use a cable with cuts (d) keep drinks far away
15. 15.Which of these mainly gives out heat? (a) a ceiling fan (b) a street light (c) a rice cooker (d) a torch
16. 16.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
17. 17.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) resistor (c) capacitor (d) wire
18. 18.Which of these mainly makes movement? (a) a ceiling fan (b) a torch (c) a room heater (d) a buzzer
19. 19.🔋 How many 3 V cells must be joined in series to give 12 V?
20. 20.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
21. 21.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) by Wi-Fi (d) in parallel
22. 22.💡 3 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
23. 23.Which of these is safe? (a) fly kites in open fields (b) touch a fallen wire (c) use mains for a project (d) climb an electric pole
24. 24.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
25. 25.💡 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?
26. 26.🔍 Which is the odd one out? (a) a rubber band (b) a metal paper clip (c) a copper wire (d) a graphite rod
27. 27.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
28. 28.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a toggle switch (c) a slide switch (d) a tilt switch
29. 29.🔍 Which is the odd one out? (a) a dry cork (b) a copper wire (c) a metal paper clip (d) a brass key
30. 30.🔋 What is a battery? (a) two or more cells joined (b) one single wire (c) a switch with a lid (d) a kind of bulb
31. 31.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
32. 32.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
33. 33.🔍 Which is the odd one out? (a) a copper wire (b) a plastic straw (c) a steel spoon (d) aluminium foil
34. 34.True or false: a dot where wires meet is the symbol for a cell. (a) False (b) True
35. 35.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
36. 36.⚡ What does a mixer grinder mainly change electricity into? (a) heat (b) light (c) movement (d) sound
37. 37.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
38. 38.🔌 Most metals are good … (a) magnets only (b) insulators (c) conductors (d) batteries
39. 39.Which of these is safe? (a) use a cable with cuts (b) stop if a part gets hot (c) throw cells in a fire (d) touch a fallen wire
40. 40.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe

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