Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 929 · 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 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 ON and C is ON. Does the bulb glow? (a) No (b) Yes
2. 2.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
3. 3.🔦 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
4. 4.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) the same voltage (c) half the voltage (d) double the voltage
5. 5.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) dust particles (c) photons (d) electrons
6. 6.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) bulb (b) diode (c) voltmeter (d) wire
7. 7.What does a reed switch do? (a) works only while pressed (b) slides side to side (c) stays where you flip it (d) closes near a magnet
8. 8.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
9. 9.💡 A battery lights 3 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
10. 10.🔘 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 ON, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
11. 11.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
12. 12.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 9 V (c) 12 V (d) 230 V
13. 13.True or false: a small empty box is the symbol for a resistor. (a) False (b) True
14. 14.🔘 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) Yes (b) No
15. 15.🔋 A 6 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
16. 16.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is OFF, B is OFF, C is OFF and D is OFF. Does the bulb glow? (a) Yes (b) No
17. 17.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) open (b) closed
18. 18.🔁 Is the circuit closed or open if all wires are joined? (a) closed (b) open
19. 19.True or false: a night lamp mainly gives out heat. (a) False (b) True
20. 20.🔋 How many 3 V cells must be joined in series to give 12 V?
21. 21.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a smaller voltage (c) no voltage (d) a bigger voltage
22. 22.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
23. 23.Which drawing is the symbol for a resistor? (a) a circle with A inside (b) a plain rectangle (c) triangle against a bar (d) one tall, one short bar
24. 24.🔌 Is a glass marble a conductor or an insulator? (a) a conductor (b) an insulator
25. 25.🔦 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 coin. Does the bulb glow? (a) No (b) Yes
26. 26.Which of these mainly gives out heat? (a) an electric kettle (b) a night lamp (c) a buzzer (d) a doorbell
27. 27.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) own switch for each bulb (d) a single current path
28. 28.Which drawing is the symbol for a switch? (a) a circle with M inside (b) a line lifted at a gap (c) a small empty box (d) a circle with V inside
29. 29.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
30. 30.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a fuse or MCB (c) a plug top (d) a long wire
31. 31.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
32. 32.True or false: a toggle switch closes near a magnet. (a) True (b) False
33. 33.💡 3 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 1 glow? (a) Yes (b) No
34. 34.🔌 Is a cotton thread a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 5 of the switches are OFF and the rest are ON. How many bulbs glow?
36. 36.Which of these mainly gives out light? (a) a traffic signal (b) a school bell (c) a ceiling fan (d) an electric drill
37. 37.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
38. 38.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) a line lifted at a gap (c) a small empty box (d) triangle against a bar
39. 39.🔍 Which is the odd one out? (a) a dry cork (b) a metal paper clip (c) a rubber eraser (d) a plastic ruler
40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) No (b) Yes

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