Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 305 · 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 steel spoon across the gap. Does the bulb glow? (a) Yes (b) No
2. 2.🔍 Which is the odd one out? (a) dry your hands first (b) use a cable with cuts (c) use small battery cells (d) build with an adult near
3. 3.🔘 Which kind of switch springs back when let go? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a push button
4. 4.Which of these mainly makes movement? (a) an electric drill (b) a buzzer (c) a school bell (d) an electric iron
5. 5.True or false: a toggle switch stays where you flip it. (a) False (b) True
6. 6.True or false: a toaster mainly gives out heat. (a) False (b) True
7. 7.Which of these is a conductor? (a) a rubber band (b) a cotton thread (c) a plastic straw (d) a copper wire
8. 8.Which drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a plain rectangle (c) two equal parallel lines (d) one tall, one short bar
9. 9.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
10. 10.🔌 Is a steel spoon a conductor or an insulator? (a) an insulator (b) a conductor
11. 11.True or false: a push button stays where you flip it. (a) True (b) False
12. 12.True or false: a ceramic cup is a conductor. (a) True (b) False
13. 13.🔘 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 ON, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
14. 14.🔌 A gap of dry air between two wires acts as … (a) a conductor (b) a switch that is ON (c) an insulator (d) a cell
15. 15.🔍 Which is the odd one out? (a) an LED lamp (b) a traffic signal (c) a night lamp (d) a loudspeaker
16. 16.🔌 Which part of a screwdriver should an electrician hold? (a) the steel shaft (b) the bare end (c) the metal tip (d) the plastic handle
17. 17.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
18. 18.🔋 How many 3 V cells must be joined in series to give 6 V?
19. 19.True or false: to dry your hands first is not safe. (a) True (b) False
20. 20.🔌 Is aluminium foil a conductor or an insulator? (a) a conductor (b) an insulator
21. 21.Which of these means the circuit is closed? (a) the switch is OFF (b) all wires are joined (c) a wire is cut (d) a cell is taken out
22. 22.Which of these is safe? (a) touch a fallen wire (b) climb an electric pole (c) stay away from pylons (d) touch a switch when wet
23. 23.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) voltmeter (b) motor (c) battery (d) wire
24. 24.⚡ What does a siren mainly change electricity into? (a) sound (b) heat (c) movement (d) light
25. 25.🔁 Is the circuit closed or open if the bulb is unscrewed? (a) closed (b) open
26. 26.Which of these is not safe? (a) keep drinks far away (b) use mains for a project (c) fly kites in open fields (d) take cells out after use
27. 27.🔦 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) Yes (b) No
28. 28.🔋 Identical cells side by side (in parallel) give … (a) half the voltage (b) no voltage (c) double the voltage (d) the same voltage
29. 29.True or false: many long-short pairs is the symbol for a switch. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) dry your hands first (b) build with an adult near (c) climb an electric pole (d) take cells out after use
31. 31.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) a straight line (c) two equal parallel lines (d) one tall, one short bar
32. 32.What does a toggle switch do? (a) closes near a magnet (b) closes when tipped over (c) stays where you flip it (d) springs back when let go
33. 33.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) never (c) when both are OFF (d) when either is ON
34. 34.Which of these is not safe? (a) use small battery cells (b) open a phone charger (c) fly kites in open fields (d) build with an adult near
35. 35.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) to hide the circuit (d) symbols are heavier
36. 36.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
37. 37.🔋 How many 2 V cells must be joined in series to give 6 V?
38. 38.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
39. 39.True or false: a room heater mainly gives out light. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a table fan (b) a mixer grinder (c) a room heater (d) a ceiling fan

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