Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 508 · 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.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) Yes (b) No
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a metal paper clip (c) a dry cork (d) a glass marble
3. 3.True or false: a mixer grinder mainly makes sound. (a) False (b) True
4. 4.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic makes current (c) to make them heavy (d) plastic is a conductor
5. 5.Which of these mainly makes sound? (a) a rice cooker (b) a loudspeaker (c) a tube light (d) a mixer grinder
6. 6.🔌 Which part of a screwdriver should an electrician hold? (a) the plastic handle (b) the bare end (c) the metal tip (d) the steel shaft
7. 7.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the shorter line (d) the longer line
8. 8.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) a circle with V inside (c) two equal parallel lines (d) a straight line
9. 9.Which of these mainly makes sound? (a) a water heater (b) a doorbell (c) a tube light (d) a ceiling fan
10. 10.What does a reed switch do? (a) springs back when let go (b) slides side to side (c) works only while pressed (d) closes near a magnet
11. 11.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
12. 12.💡 5 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
13. 13.True or false: a paper strip is a conductor. (a) True (b) False
14. 14.⚡ What does a toaster mainly change electricity into? (a) sound (b) heat (c) light (d) movement
15. 15.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
16. 16.💡 4 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?
17. 17.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they get dimmer (c) they explode (d) they keep glowing
18. 18.🔘 What does a switch do in a circuit? (a) opens or closes the loop (b) changes the voltage (c) stores current (d) makes electricity
19. 19.🔦 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) Yes (b) No
20. 20.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) none (d) one for each bulb
21. 21.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 230 V (c) 1.5 V (d) 15 V
22. 22.Which of these is not safe? (a) stay away from pylons (b) touch a switch when wet (c) take cells out after use (d) stop if a part gets hot
23. 23.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) by Wi-Fi (c) in parallel (d) not joined
24. 24.🔋 Does a solar panel give electricity or use electricity? (a) uses electricity (b) gives electricity
25. 25.True or false: on a cell, “usually the black wire” means the + (positive) end. (a) True (b) False
26. 26.Which of these uses electricity? (a) a cell (b) a battery (c) an air conditioner (d) a solar panel
27. 27.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
28. 28.⚠️ 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
29. 29.💡 2 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 1 glow? (a) No (b) Yes
30. 30.Which of these uses electricity? (a) a power station (b) a solar panel (c) a washing machine (d) a battery
31. 31.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
32. 32.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) only when both are ON (b) never (c) when either is ON (d) only when both are OFF
33. 33.🔁 Is the circuit closed or open if a wire has come loose? (a) open (b) closed
34. 34.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a plastic straw (d) a brass key
35. 35.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
36. 36.Which of these uses electricity? (a) a wind turbine (b) a solar panel (c) a cell (d) a refrigerator
37. 37.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
38. 38.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
39. 39.Which drawing is the symbol for a wire? (a) a long and a short line (b) one tall, one short bar (c) a straight line (d) a circle with a cross
40. 40.🔍 Which is the odd one out? (a) climb an electric pole (b) open a phone charger (c) dry your hands first (d) touch a switch when wet

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