Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 226 · 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.🔁 What must there be for a current to flow? (a) a complete loop (b) one loose end (c) a broken path (d) a plastic gap
2. 2.Which of these is an insulator? (a) a rubber eraser (b) an iron nail (c) a graphite rod (d) a copper wire
3. 3.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
4. 4.Which of these uses electricity? (a) a bicycle dynamo (b) a wind turbine (c) an air conditioner (d) a generator
5. 5.🔘 What does a switch do in a circuit? (a) changes the voltage (b) stores current (c) opens or closes the loop (d) makes electricity
6. 6.💡 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?
7. 7.🔋 Does a computer give electricity or use electricity? (a) uses electricity (b) gives electricity
8. 8.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
9. 9.⚠️ Is it safe to touch a switch when wet? (a) not safe (b) safe
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) cell (c) switch (d) capacitor
11. 11.Which drawing is the symbol for a resistor? (a) two equal parallel lines (b) a circle with an X in it (c) a plain rectangle (d) many long-short pairs
12. 12.🔘 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 OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
13. 13.⚡ A solar panel changes which kind of energy into electricity? (a) light energy (b) sound energy (c) wind energy (d) chemical energy
14. 14.🔍 Which is the odd one out? (a) a traffic signal (b) a street light (c) a night lamp (d) a mixer grinder
15. 15.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
16. 16.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) one bulb out, all go out (d) used in house wiring
17. 17.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) Yes (b) No
18. 18.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) a cell is taken out (d) all wires are joined
19. 19.🔘 Which kind of switch springs back when let go? (a) a push button (b) a slide switch (c) a reed switch (d) a toggle switch
20. 20.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) bulbs share the voltage (d) one out, the rest glow
21. 21.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
22. 22.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
23. 23.⚡ What do we call a flow of electric charge through a wire? (a) a magnet (b) electric current (c) sound (d) friction
24. 24.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the metal tip (c) the plastic handle (d) the bare end
25. 25.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a slide switch (c) a push button (d) a tilt switch
26. 26.What does a toggle switch do? (a) slides side to side (b) springs back when let go (c) flips up or down (d) closes near a magnet
27. 27.🔦 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 paper strip. Does the bulb glow? (a) No (b) Yes
28. 28.Which of these mainly makes sound? (a) a ceiling fan (b) a toaster (c) an exhaust fan (d) a doorbell
29. 29.🔋 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)? =
30. 30.Which of these gives us electricity? (a) a computer (b) a refrigerator (c) a mobile phone (d) a power station
31. 31.🔁 Is the circuit closed or open if the switch is OFF? (a) closed (b) open
32. 32.🔦 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
33. 33.🔋 A 3 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
34. 34.🔋 4 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)? =
35. 35.💡 A battery lights 3 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
36. 36.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
37. 37.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
38. 38.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
39. 39.⚡ What does an electric drill mainly change electricity into? (a) heat (b) movement (c) light (d) sound
40. 40.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False

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