Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 106 · 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.What does a toggle switch do? (a) stays where you flip it (b) slides side to side (c) works only while pressed (d) closes when tipped over
2. 2.What does a push button do? (a) closes near a magnet (b) stays where you flip it (c) flips up or down (d) springs back when let go
3. 3.True or false: a cotton thread is an insulator. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) dry your hands first (b) use small battery cells (c) build with an adult near (d) throw cells in a fire
5. 5.🔍 Which is the odd one out? (a) a tube light (b) a water heater (c) a traffic signal (d) an LED lamp
6. 6.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) the shorter line (c) both lines (d) the longer line
7. 7.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
8. 8.💡 In a series circuit, how many paths does the current have? (a) two (b) none (c) one for each bulb (d) one
9. 9.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
10. 10.Which drawing is the symbol for a resistor? (a) a straight line (b) a circle with V inside (c) two or more cell symbols (d) a plain rectangle
11. 11.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
12. 12.🔁 Is the circuit closed or open if a wire is cut? (a) open (b) closed
13. 13.🔍 Which is the odd one out? (a) use small battery cells (b) use mains for a project (c) open a phone charger (d) touch a switch when wet
14. 14.🔍 Which is the odd one out? (a) a glass marble (b) an iron nail (c) a copper wire (d) a safety pin
15. 15.💡 4 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
16. 16.Which of these is an insulator? (a) a graphite rod (b) a ceramic cup (c) aluminium foil (d) a steel spoon
17. 17.Which of these is true of a parallel circuit? (a) a single current path (b) one bulb out, all go out (c) a break stops every bulb (d) many paths for current
18. 18.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) bulbs share the voltage (d) each gets the full volts
19. 19.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
20. 20.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a series circuit (c) an open circuit (d) a full circuit
21. 21.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to hide the circuit (c) symbols are heavier (d) to make it colourful
22. 22.⚡ What does an exhaust fan mainly change electricity into? (a) sound (b) heat (c) light (d) movement
23. 23.🔗 Series or parallel circuit: “one out, the rest glow”? (a) parallel (b) series
24. 24.True or false: “a break stops every bulb” is true of a parallel circuit. (a) False (b) True
25. 25.🔘 Two switches are in parallel (side by side). When does the bulb glow? (a) never (b) only when both are ON (c) when either is ON (d) only when both are OFF
26. 26.True or false: a copper wire is an insulator. (a) False (b) True
27. 27.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
28. 28.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
29. 29.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. Does the bulb glow? (a) Yes (b) No
30. 30.Which of these is not safe? (a) use mains for a project (b) take cells out after use (c) dry your hands first (d) stay away from pylons
31. 31.True or false: to fly a kite near wires is safe. (a) True (b) False
32. 32.💡 5 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?
33. 33.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) a conductor (c) a cell (d) an insulator
34. 34.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) movement energy (b) chemical energy (c) sound energy (d) light energy
35. 35.Which of these is true of a series circuit? (a) many paths for current (b) one out, the rest glow (c) each gets the full volts (d) a single current path
36. 36.⚠️ Is it safe to stop if a part gets hot? (a) safe (b) not safe
37. 37.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
38. 38.🔍 Which is the odd one out? (a) a metal paper clip (b) a copper wire (c) a rubber band (d) a graphite rod
39. 39.True or false: to stop if a part gets hot is not safe. (a) True (b) False
40. 40.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False

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