Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 264 · 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.Which of these mainly makes movement? (a) a table fan (b) a buzzer (c) a doorbell (d) a water heater
2. 2.💡 6 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?
3. 3.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) little stars (c) dotted circles (d) wavy lines
4. 4.💡 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 2 glow? (a) Yes (b) No
5. 5.Which drawing is the symbol for a switch? (a) a circle with an X in it (b) two or more cell symbols (c) a line lifted at a gap (d) a long and a short line
6. 6.🔍 Which is the odd one out? (a) a ceramic cup (b) a rubber eraser (c) a safety pin (d) a rubber band
7. 7.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) a rubber band (c) a rubber eraser (d) a plastic ruler
9. 9.What does a reed switch do? (a) closes near a magnet (b) slides side to side (c) springs back when let go (d) stays where you flip it
10. 10.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
11. 11.🔘 Which kind of switch flips up or down? (a) a tilt switch (b) a reed switch (c) a slide switch (d) a toggle switch
12. 12.Which drawing is the symbol for a wire? (a) a circle with V inside (b) a dot where wires meet (c) a circle with a cross (d) a straight line
13. 13.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
14. 14.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
15. 15.True or false: a steel coin is a conductor. (a) False (b) True
16. 16.True or false: a siren mainly makes movement. (a) False (b) True
17. 17.🔋 Does a washing machine give electricity or use electricity? (a) uses electricity (b) gives electricity
18. 18.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
19. 19.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) a wall socket (c) an inverter socket (d) a small battery pack
20. 20.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
21. 21.True or false: on a cell, “the flat end” means the + (positive) end. (a) False (b) True
22. 22.What does a tilt switch do? (a) slides side to side (b) works only while pressed (c) stays where you flip it (d) closes when tipped over
23. 23.Which of these is an insulator? (a) a rubber band (b) a steel coin (c) aluminium foil (d) an iron nail
24. 24.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) by Wi-Fi (d) in parallel
25. 25.True or false: a push button works only while pressed. (a) True (b) False
26. 26.True or false: “each gets the full volts” is true of a series circuit. (a) False (b) True
27. 27.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) the same voltage (c) no voltage (d) double the voltage
28. 28.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
29. 29.Which drawing is the symbol for a diode? (a) triangle against a bar (b) a circle with M inside (c) a circle with an X in it (d) many long-short pairs
30. 30.True or false: a wooden stick is a conductor. (a) True (b) False
31. 31.🔁 What must there be for a current to flow? (a) a broken path (b) one loose end (c) a plastic gap (d) a complete loop
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) Yes (b) No
33. 33.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
34. 34.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
35. 35.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
36. 36.🔍 Which is the odd one out? (a) a traffic signal (b) a tube light (c) a ceiling fan (d) a torch
37. 37.🔍 Which is the odd one out? (a) open a phone charger (b) take cells out after use (c) touch a switch when wet (d) fly a kite near wires
38. 38.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
39. 39.Which of these is safe? (a) keep drinks far away (b) throw cells in a fire (c) touch a switch when wet (d) use a cable with cuts
40. 40.🔘 Two switches are in series. When does the bulb glow? (a) when both are OFF (b) never (c) when both are ON (d) when either is ON

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