Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 803 · 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 circle with A inside is the symbol for a capacitor. (a) False (b) True
2. 2.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a brass key. Does the bulb glow? (a) Yes (b) No
3. 3.🔍 Which is the odd one out? (a) use mains for a project (b) dry your hands first (c) throw cells in a fire (d) touch a switch when wet
4. 4.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
5. 5.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
6. 6.🔋 4 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
7. 7.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
8. 8.⚡ What does a tube light mainly change electricity into? (a) light (b) sound (c) heat (d) movement
9. 9.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) never (c) when both are OFF (d) when both are ON
10. 10.💡 A battery lights 5 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
11. 11.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
12. 12.🔋 A 6 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
13. 13.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) electric current (d) a magnet
14. 14.Which of these means the circuit is closed? (a) a wire is cut (b) a cell is taken out (c) the switch is ON (d) the bulb is unscrewed
15. 15.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) capacitor (b) battery (c) ammeter (d) junction
16. 16.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) an open circuit (d) a series circuit
17. 17.🔌 Most metals are good … (a) conductors (b) batteries (c) magnets only (d) insulators
18. 18.Which drawing is the symbol for a motor? (a) a circle with a cross (b) a straight line (c) a circle with M inside (d) many long-short pairs
19. 19.🔘 Which kind of switch stays where you flip it? (a) a toggle switch (b) a slide switch (c) a push button (d) a reed switch
20. 20.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
21. 21.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
22. 22.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
23. 23.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
24. 24.True or false: a metal paper clip is an insulator. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a rice cooker (b) a mixer grinder (c) an electric kettle (d) a toaster
26. 26.🔋 Does a television give electricity or use electricity? (a) uses electricity (b) gives electricity
27. 27.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) a single current path (d) used in house wiring
28. 28.Which of these is safe? (a) touch a fallen wire (b) use mains for a project (c) fly a kite near wires (d) stop if a part gets hot
29. 29.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the metal tip (c) the steel shaft (d) the plastic handle
30. 30.💡 3 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
31. 31.Which of these uses electricity? (a) a wind turbine (b) a washing machine (c) a bicycle dynamo (d) a cell
32. 32.Which of these means the circuit is closed? (a) the bulb is unscrewed (b) a wire is cut (c) all wires are joined (d) a wire has come loose
33. 33.🔦 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 safety pin. Does the bulb glow? (a) Yes (b) No
34. 34.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) in parallel (c) not joined (d) in series
35. 35.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
36. 36.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
37. 37.Which of these mainly gives out heat? (a) a tube light (b) a ceiling fan (c) an electric kettle (d) a street light
38. 38.💡 3 identical bulbs are joined in series with a 12 V battery (ideal wires). How many volts does each bulb get? =
39. 39.Which of these means the circuit is open? (a) all wires are joined (b) a wire has come loose (c) the loop is complete (d) the switch is ON
40. 40.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe

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