Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 488 · 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.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) switch (b) battery (c) cell (d) motor
2. 2.True or false: “one out, the rest glow” is true of a series circuit. (a) True (b) False
3. 3.True or false: a rubber band is a conductor. (a) True (b) False
4. 4.💡 3 identical bulbs are in parallel and each one takes 0.1 A. What total current (in amperes) comes from the battery? =
5. 5.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) Yes (b) No
6. 6.Which drawing is the symbol for a switch? (a) many long-short pairs (b) a small empty box (c) a line lifted at a gap (d) a plain rectangle
7. 7.⚡ What does a rice cooker mainly change electricity into? (a) movement (b) sound (c) heat (d) light
8. 8.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) a single current path (d) used in house wiring
9. 9.Which of these means the circuit is closed? (a) the loop is complete (b) a wire has come loose (c) a cell is taken out (d) the bulb is unscrewed
10. 10.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
11. 11.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
12. 12.✏️ In a circuit diagram, which part is drawn as a straight line? (a) motor (b) bulb (c) battery (d) wire
13. 13.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
14. 14.Which of these mainly makes movement? (a) a school bell (b) a tube light (c) a room heater (d) a ceiling fan
15. 15.Which of these mainly makes movement? (a) a torch (b) an electric drill (c) a buzzer (d) an electric iron
16. 16.True or false: a room heater mainly gives out heat. (a) False (b) True
17. 17.What does a toggle switch do? (a) stays where you flip it (b) closes near a magnet (c) springs back when let go (d) works only while pressed
18. 18.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 3 is taken out of its holder. How many bulbs glow?
19. 19.Which of these is a conductor? (a) a cotton thread (b) an iron nail (c) a plastic ruler (d) a rubber band
20. 20.Which drawing is the symbol for a motor? (a) triangle against a bar (b) a plain rectangle (c) a circle with M inside (d) one tall, one short bar
21. 21.🔍 Which is the odd one out? (a) poke things in a socket (b) stay away from pylons (c) throw cells in a fire (d) touch a switch when wet
22. 22.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
23. 23.Which of these mainly makes sound? (a) an electric drill (b) a room heater (c) a loudspeaker (d) a water heater
24. 24.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
25. 25.What does a slide switch do? (a) closes near a magnet (b) slides side to side (c) flips up or down (d) closes when tipped over
26. 26.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
27. 27.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a rubber eraser across the gap. Does the bulb glow? (a) No (b) Yes
28. 28.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
29. 29.🔘 What does a switch do in a circuit? (a) changes the voltage (b) stores current (c) opens or closes the loop (d) makes electricity
30. 30.Which of these is safe? (a) throw cells in a fire (b) keep drinks far away (c) use mains for a project (d) climb an electric pole
31. 31.⚠️ Which power source should children use for electronics projects? (a) a wall socket (b) an inverter socket (c) a small battery pack (d) a mains extension board
32. 32.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) LED (b) capacitor (c) ammeter (d) wire
33. 33.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
34. 34.What does a toggle switch do? (a) works only while pressed (b) slides side to side (c) flips up or down (d) closes when tipped over
35. 35.🔍 Which is the odd one out? (a) a brass key (b) a metal paper clip (c) a dry cork (d) a steel coin
36. 36.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
37. 37.True or false: a glass marble is a conductor. (a) True (b) False
38. 38.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) no voltage (d) half the voltage
39. 39.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) Yes (b) No
40. 40.True or false: a cotton thread is an insulator. (a) False (b) True

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