Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 342 · 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 is the odd one out? (a) a buzzer (b) a traffic signal (c) an LED lamp (d) a tube light
2. 2.🔘 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 ON and C is OFF. Does the bulb glow? (a) Yes (b) No
3. 3.True or false: a tilt switch stays where you flip it. (a) True (b) False
4. 4.🔁 In an old-style bulb, which thin wire glows when current flows? (a) the base (b) the filament (c) the switch (d) the glass
5. 5.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
6. 6.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) only one (b) both of them (c) it does not matter (d) none
7. 7.True or false: if all wires are joined, the circuit is closed and current flows. (a) True (b) False
8. 8.Which of these means the circuit is open? (a) the loop is complete (b) all wires are joined (c) a wire is cut (d) the switch is ON
9. 9.What does a slide switch do? (a) works only while pressed (b) springs back when let go (c) closes when tipped over (d) slides side to side
10. 10.💡 Why is house wiring done in parallel? (a) to save copper only (b) to make bulbs dim (c) each gets full voltage (d) so all go off together
11. 11.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the steel shaft (c) the plastic handle (d) the metal tip
12. 12.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
13. 13.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a fuse or MCB (c) a long wire (d) a plug top
14. 14.🔍 Which is the odd one out? (a) poke things in a socket (b) use small battery cells (c) fly a kite near wires (d) use a cable with cuts
15. 15.💡 2 identical bulbs are joined in series with a 3 V battery (ideal wires). How many volts does each bulb get? =
16. 16.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
17. 17.Which of these mainly makes sound? (a) a doorbell (b) a street light (c) an electric iron (d) an electric drill
18. 18.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
19. 19.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) ammeter (c) capacitor (d) wire
20. 20.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) sound energy (c) chemical energy (d) movement energy
21. 21.🔘 Which kind of switch works only while pressed? (a) a push button (b) a toggle switch (c) a slide switch (d) a tilt switch
22. 22.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
23. 23.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
24. 24.Which of these is safe? (a) fly kites in open fields (b) climb an electric pole (c) throw cells in a fire (d) use a cable with cuts
25. 25.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
26. 26.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they keep glowing (c) they get dimmer (d) they explode
27. 27.🔍 Which is the odd one out? (a) stay away from pylons (b) fly a kite near wires (c) throw cells in a fire (d) poke things in a socket
28. 28.True or false: to keep drinks far away is safe. (a) True (b) False
29. 29.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
30. 30.🔋 Does a battery give electricity or use electricity? (a) gives electricity (b) uses electricity
31. 31.💡 6 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 4 and 5 are taken out of their holders. Does bulb 6 glow? (a) No (b) Yes
32. 32.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is OFF, C is OFF and D is ON. Does the bulb glow? (a) No (b) Yes
33. 33.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) series (b) parallel
34. 34.Which of these is an insulator? (a) a graphite rod (b) an iron nail (c) a safety pin (d) a rubber band
35. 35.Which of these mainly makes sound? (a) a traffic signal (b) a night lamp (c) a street light (d) a siren
36. 36.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
37. 37.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) a full circuit (c) an open circuit (d) a closed circuit
38. 38.Which of these is a conductor? (a) a copper wire (b) a rubber eraser (c) a plastic straw (d) a woollen thread
39. 39.🔋 How many 2 V cells must be joined in series to give 6 V?
40. 40.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes

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