Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 507 · 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.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) by Wi-Fi (c) in series (d) in parallel
2. 2.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) voltmeter (b) LED (c) cell (d) switch
3. 3.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
4. 4.🔋 Does a wind turbine give electricity or use electricity? (a) gives electricity (b) uses electricity
5. 5.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) True (b) False
6. 6.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a safe circuit (b) a short circuit (c) an open circuit (d) a parallel circuit
7. 7.🔘 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 OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
8. 8.True or false: a circle with a cross is the symbol for a battery. (a) False (b) True
9. 9.Which of these mainly makes sound? (a) a table fan (b) a buzzer (c) an electric iron (d) an electric drill
10. 10.🔍 Which is the odd one out? (a) a steel coin (b) a rubber band (c) a rubber eraser (d) a ceramic cup
11. 11.💡 5 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
12. 12.Which of these mainly makes movement? (a) a school bell (b) a room heater (c) an exhaust fan (d) an LED lamp
13. 13.True or false: a copper wire is an insulator. (a) False (b) True
14. 14.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
15. 15.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
16. 16.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it is just untidy (c) it spoils the paint (d) water carries current
17. 17.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
18. 18.🔌 Which metal is used for most electric wires at home? (a) plastic (b) rubber (c) glass (d) copper
19. 19.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a metal paper clip. Does the bulb glow? (a) No (b) Yes
20. 20.🔦 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) Yes (b) No
21. 21.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
22. 22.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) voltmeter (b) cell (c) ammeter (d) bulb
23. 23.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) bulbs share the voltage (c) a single current path (d) each gets the full volts
24. 24.Which drawing is the symbol for a battery? (a) a long and a short line (b) a circle with an X in it (c) two or more cell symbols (d) a circle with V inside
25. 25.🔘 Which kind of switch works only while pressed? (a) a push button (b) a toggle switch (c) a slide switch (d) a reed switch
26. 26.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) when either is ON (c) never (d) when both are OFF
27. 27.Which of these mainly makes sound? (a) a doorbell (b) a traffic signal (c) a toaster (d) a tube light
28. 28.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
29. 29.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a closed circuit (c) a series circuit (d) an open circuit
30. 30.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) sound energy (b) movement energy (c) light energy (d) chemical energy
31. 31.🔦 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
32. 32.Which drawing is the symbol for a voltmeter? (a) a circle with an X in it (b) a plain rectangle (c) a circle with V inside (d) a circle with M inside
33. 33.🔍 Which is the odd one out? (a) an iron nail (b) a steel spoon (c) a plastic ruler (d) a metal paper clip
34. 34.🔦 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 rubber eraser. Does the bulb glow? (a) Yes (b) No
35. 35.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
36. 36.🔘 What does a switch do in a circuit? (a) changes the voltage (b) makes electricity (c) opens or closes the loop (d) stores current
37. 37.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
38. 38.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
39. 39.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) resistor (b) battery (c) diode (d) capacitor
40. 40.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) LED (c) diode (d) wire

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