Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 153 · 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 is a conductor? (a) a steel coin (b) a cotton thread (c) a plastic straw (d) a glass marble
2. 2.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) ammeter (b) LED (c) diode (d) battery
3. 3.True or false: many long-short pairs is the symbol for a capacitor. (a) True (b) False
4. 4.⚡ What does a tube light mainly change electricity into? (a) movement (b) heat (c) sound (d) light
5. 5.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a tilt switch (c) a reed switch (d) a slide switch
6. 6.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
7. 7.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a series circuit (c) a closed circuit (d) an open circuit
8. 8.Which of these is not safe? (a) use small battery cells (b) throw cells in a fire (c) keep drinks far away (d) stay away from pylons
9. 9.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the plastic handle (c) the steel shaft (d) the bare end
10. 10.💡 In a series circuit, how many paths does the current have? (a) one (b) two (c) one for each bulb (d) none
11. 11.Which of these is true of a series circuit? (a) each gets the full volts (b) a break stops every bulb (c) own switch for each bulb (d) one out, the rest glow
12. 12.Which of these mainly makes movement? (a) a school bell (b) an electric drill (c) a doorbell (d) a water heater
13. 13.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
14. 14.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) to make it colourful (d) symbols are heavier
15. 15.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
16. 16.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 3 glow? (a) Yes (b) No
17. 17.💡 3 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
18. 18.🔌 Is a rubber band a conductor or an insulator? (a) a conductor (b) an insulator
19. 19.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
20. 20.🔋 Does a computer give electricity or use electricity? (a) gives electricity (b) uses electricity
21. 21.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a reed switch
22. 22.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
23. 23.Which of these is safe? (a) climb an electric pole (b) fly kites in open fields (c) poke things in a socket (d) touch a switch when wet
24. 24.🔋 How many 1.5 V cells must be joined in series to give 9 V?
25. 25.🔘 Which kind of switch flips up or down? (a) a push button (b) a slide switch (c) a tilt switch (d) a toggle switch
26. 26.🔋 6 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
27. 27.True or false: to use a cable with cuts is safe. (a) False (b) True
28. 28.Which of these is not safe? (a) build with an adult near (b) fly a kite near wires (c) use small battery cells (d) take cells out after use
29. 29.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
30. 30.⚡ What does a school bell mainly change electricity into? (a) light (b) sound (c) movement (d) heat
31. 31.True or false: a small empty box is the symbol for a diode. (a) True (b) False
32. 32.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
33. 33.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) bulb (b) voltmeter (c) battery (d) capacitor
34. 34.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
35. 35.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
36. 36.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
37. 37.🔋 How many volts does one ordinary torch cell give? (a) 15 V (b) 0.5 V (c) 230 V (d) 1.5 V
38. 38.True or false: a night lamp mainly makes sound. (a) True (b) False
39. 39.Which of these is not safe? (a) touch a switch when wet (b) use small battery cells (c) build with an adult near (d) keep drinks far away
40. 40.Which drawing is the symbol for a battery? (a) a circle with a cross (b) many long-short pairs (c) one tall, one short bar (d) a plain rectangle

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