Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 594 · 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.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a paper strip. Does the bulb glow? (a) Yes (b) No
2. 2.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a woollen thread. Does the bulb glow? (a) No (b) Yes
3. 3.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
4. 4.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
5. 5.🔦 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
6. 6.Which of these is a conductor? (a) a paper strip (b) a safety pin (c) a rubber band (d) a rubber eraser
7. 7.🔋 A 12 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
8. 8.🔍 Which is the odd one out? (a) a metal paper clip (b) a safety pin (c) a rubber eraser (d) a brass key
9. 9.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
10. 10.🔘 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 ON and C is OFF. Does the bulb glow? (a) No (b) Yes
11. 11.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a loudspeaker (b) a doorbell (c) a buzzer (d) a tube light
13. 13.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
14. 14.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
15. 15.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe
16. 16.Which of these is a conductor? (a) a metal paper clip (b) a wooden stick (c) a dry cork (d) a plastic ruler
17. 17.🔋 7 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)? =
18. 18.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) movement energy (d) sound energy
19. 19.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
20. 20.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) bulb (b) LED (c) capacitor (d) battery
21. 21.What does a tilt switch do? (a) flips up or down (b) springs back when let go (c) works only while pressed (d) closes when tipped over
22. 22.What does a slide switch do? (a) slides side to side (b) flips up or down (c) works only while pressed (d) stays where you flip it
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 rubber band. Does the bulb glow? (a) No (b) Yes
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a brass key (c) a wooden stick (d) a rubber band
25. 25.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one for each bulb (d) one
26. 26.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) electrons (c) photons (d) water drops
27. 27.🔌 Is aluminium foil a conductor or an insulator? (a) an insulator (b) a conductor
28. 28.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
29. 29.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
30. 30.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
31. 31.Which of these is true of a series circuit? (a) one out, the rest glow (b) many paths for current (c) own switch for each bulb (d) one bulb out, all go out
32. 32.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) nuclear energy (c) wind energy (d) electrical energy
33. 33.🔦 A circuit has a used-up (dead) 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 ceramic cup. Does the bulb glow? (a) No (b) Yes
34. 34.🔋 How many 3 V cells must be joined in series to give 6 V?
35. 35.True or false: to take cells out after use is safe. (a) True (b) False
36. 36.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
37. 37.True or false: “a single current path” is true of a series circuit. (a) False (b) True
38. 38.🔁 What must there be for a current to flow? (a) a plastic gap (b) a broken path (c) one loose end (d) a complete loop
39. 39.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
40. 40.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =

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