Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 379 · 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.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
2. 2.🔍 Which is the odd one out? (a) an electric toy car (b) an exhaust fan (c) an electric drill (d) an electric kettle
3. 3.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
4. 4.What does a push button do? (a) closes near a magnet (b) stays where you flip it (c) springs back when let go (d) slides side to side
5. 5.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) own switch for each bulb (d) one bulb out, all go out
6. 6.🔌 Is a ceramic cup a conductor or an insulator? (a) a conductor (b) an insulator
7. 7.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
8. 8.Which of these is not safe? (a) keep drinks far away (b) poke things in a socket (c) stop if a part gets hot (d) dry your hands first
9. 9.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
10. 10.Which of these means the circuit is open? (a) all wires are joined (b) the switch is ON (c) a cell is taken out (d) the loop is complete
11. 11.Which of these is safe? (a) open a phone charger (b) use a cable with cuts (c) throw cells in a fire (d) build with an adult near
12. 12.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a push button (c) a tilt switch (d) a toggle switch
13. 13.Which of these is true of a parallel circuit? (a) a single current path (b) many paths for current (c) bulbs share the voltage (d) one bulb out, all go out
14. 14.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button
15. 15.🔁 What must there be for a current to flow? (a) a plastic gap (b) one loose end (c) a broken path (d) a complete loop
16. 16.🔋 A 6 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
17. 17.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
18. 18.🔦 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) Yes (b) No
19. 19.True or false: a graphite rod is a conductor. (a) False (b) True
20. 20.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
21. 21.🔍 Which is the odd one out? (a) a toaster (b) a mixer grinder (c) an electric kettle (d) a rice cooker
22. 22.Which of these is a conductor? (a) a plastic straw (b) a cotton thread (c) a graphite rod (d) a rubber band
23. 23.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 9 V (c) 230 V (d) 1.5 V
24. 24.⚡ What does a buzzer mainly change electricity into? (a) movement (b) light (c) heat (d) sound
25. 25.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
26. 26.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
27. 27.True or false: to stop if a part gets hot is not safe. (a) True (b) False
28. 28.Which of these uses electricity? (a) a solar panel (b) a cell (c) an air conditioner (d) a power station
29. 29.⚡ A fan changes electrical energy mainly into which kind of energy? (a) sound energy (b) chemical energy (c) movement energy (d) light energy
30. 30.⚡ What does a doorbell mainly change electricity into? (a) heat (b) sound (c) movement (d) light
31. 31.Which of these is true of a series circuit? (a) own switch for each bulb (b) bulbs share the voltage (c) many paths for current (d) one out, the rest glow
32. 32.🔋 5 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)? =
33. 33.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic is a conductor (d) plastic makes current
34. 34.What does a toggle switch do? (a) slides side to side (b) stays where you flip it (c) closes near a magnet (d) springs back when let go
35. 35.Which of these is an insulator? (a) a copper wire (b) a woollen thread (c) a steel spoon (d) a brass key
36. 36.🔌 Most metals are good … (a) batteries (b) conductors (c) magnets only (d) insulators
37. 37.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) one out, the rest glow (d) a break stops every bulb
38. 38.🔋 A 12 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
39. 39.💡 3 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?
40. 40.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed

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