Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 706 · 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.🔋 Does a battery give electricity or use electricity? (a) uses electricity (b) gives electricity
2. 2.⚡ A solar panel changes which kind of energy into electricity? (a) wind energy (b) sound energy (c) light energy (d) chemical energy
3. 3.True or false: “a break stops every bulb” is true of a series circuit. (a) True (b) False
4. 4.⚡ What does a night lamp mainly change electricity into? (a) movement (b) heat (c) sound (d) light
5. 5.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
6. 6.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) own switch for each bulb
7. 7.🔋 How many 2 V cells must be joined in series to give 6 V?
8. 8.🔋 8 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)? =
9. 9.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
10. 10.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
11. 11.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) only when both are OFF (c) when either is ON (d) never
12. 12.🔘 Which kind of switch flips up or down? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a push button
13. 13.True or false: a wooden stick is an insulator. (a) True (b) False
14. 14.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 12 V (d) 230 V
15. 15.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a push button
16. 16.True or false: an exhaust fan mainly gives out heat. (a) False (b) True
17. 17.Which of these mainly makes movement? (a) an electric toy car (b) a school bell (c) a water heater (d) an electric iron
18. 18.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) only one (c) both of them (d) none
19. 19.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) motor (b) LED (c) junction (d) battery
20. 20.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) not joined (d) in series
21. 21.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) a small battery pack (c) an inverter socket (d) a wall socket
22. 22.🔦 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 copper wire. Does the bulb glow? (a) No (b) Yes
23. 23.True or false: if a wire has come loose, the circuit is closed and current flows. (a) False (b) True
24. 24.Which of these means the circuit is closed? (a) the switch is OFF (b) the bulb is unscrewed (c) the loop is complete (d) a wire is cut
25. 25.💡 5 identical bulbs are joined in series with a 15 V battery (ideal wires). How many volts does each bulb get? =
26. 26.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) wire (b) junction (c) voltmeter (d) bulb
27. 27.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is ON. Does the bulb glow? (a) No (b) Yes
28. 28.Which of these is a conductor? (a) a wooden stick (b) a rubber eraser (c) a copper wire (d) a paper strip
29. 29.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
30. 30.True or false: a circle with a cross is the symbol for a bulb. (a) True (b) False
31. 31.Which of these is true of a series circuit? (a) own switch for each bulb (b) many paths for current (c) a single current path (d) used in house wiring
32. 32.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a glass marble across the gap. Does the bulb glow? (a) No (b) Yes
33. 33.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) when either is ON (c) never (d) when both are ON
34. 34.Which of these means the circuit is closed? (a) the switch is OFF (b) a cell is taken out (c) the switch is ON (d) a wire has come loose
35. 35.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
36. 36.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 1.5 V (c) 0.5 V (d) 15 V
37. 37.Which of these gives us electricity? (a) an air conditioner (b) a refrigerator (c) a washing machine (d) a wind turbine
38. 38.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) all wires are joined (d) a wire has come loose
39. 39.True or false: an electric drill mainly makes sound. (a) True (b) False
40. 40.True or false: to climb an electric pole is not safe. (a) False (b) True

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