Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 323 · 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.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
2. 2.💡 A battery lights 4 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
3. 3.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) ammeter (c) cell (d) voltmeter
4. 4.Which of these mainly gives out heat? (a) a mixer grinder (b) a night lamp (c) an electric iron (d) an electric toy car
5. 5.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
6. 6.🔘 Which kind of switch flips up or down? (a) a reed switch (b) a push button (c) a slide switch (d) a toggle switch
7. 7.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) an open circuit (c) a safe circuit (d) a short circuit
8. 8.🔍 Which is the odd one out? (a) stop if a part gets hot (b) build with an adult near (c) dry your hands first (d) touch a fallen wire
9. 9.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
10. 10.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) cell (b) motor (c) wire (d) battery
11. 11.True or false: “a single current path” is true of a parallel circuit. (a) True (b) False
12. 12.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by a glass marble. Does the bulb glow? (a) Yes (b) No
13. 13.True or false: an iron nail is an insulator. (a) True (b) False
14. 14.True or false: if a wire is cut, the circuit is closed and current flows. (a) False (b) True
15. 15.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. Does bulb 3 glow? (a) Yes (b) No
16. 16.True or false: one tall, one short bar is the symbol for a cell. (a) True (b) False
17. 17.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
18. 18.True or false: a slide switch slides side to side. (a) False (b) True
19. 19.Which of these mainly makes movement? (a) a traffic signal (b) an electric toy car (c) an electric kettle (d) a street light
20. 20.🔘 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
21. 21.🔍 Which is the odd one out? (a) stay away from pylons (b) take cells out after use (c) fly kites in open fields (d) open a phone charger
22. 22.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
23. 23.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
24. 24.Which of these is safe? (a) throw cells in a fire (b) poke things in a socket (c) touch a switch when wet (d) dry your hands first
25. 25.True or false: to open a phone charger is not safe. (a) True (b) False
26. 26.🔦 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 steel spoon. Does the bulb glow? (a) Yes (b) No
27. 27.Which of these is a conductor? (a) a copper wire (b) a wooden stick (c) a plastic straw (d) a plastic ruler
28. 28.Which of these is safe? (a) poke things in a socket (b) use a cable with cuts (c) fly a kite near wires (d) use small battery cells
29. 29.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) no voltage (c) double the voltage (d) half the voltage
30. 30.Which of these is safe? (a) poke things in a socket (b) use a cable with cuts (c) use mains for a project (d) stay away from pylons
31. 31.Which of these is a conductor? (a) a rubber band (b) a steel coin (c) a cotton thread (d) a wooden stick
32. 32.💡 A battery lights 2 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
33. 33.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
34. 34.💡 5 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
35. 35.Which of these mainly gives out light? (a) a table fan (b) a water heater (c) a street light (d) an electric toy car
36. 36.True or false: a circle with A inside is the symbol for a bulb. (a) False (b) True
37. 37.🔋 Cells joined + to − in a row (series) give … (a) a smaller voltage (b) a bigger voltage (c) the same voltage (d) no voltage
38. 38.What does a push button do? (a) springs back when let go (b) closes when tipped over (c) stays where you flip it (d) slides side to side
39. 39.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) one for each bulb (d) none
40. 40.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in series (c) in parallel (d) not joined

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