Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 619 · 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 kind of switch works only while pressed? (a) a reed switch (b) a push button (c) a toggle switch (d) a slide switch
2. 2.⚡ What does a water heater mainly change electricity into? (a) heat (b) light (c) movement (d) sound
3. 3.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is ON and B is OFF. Does the bulb glow? (a) No (b) Yes
4. 4.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) capacitor (b) voltmeter (c) switch (d) bulb
5. 5.🔍 Which is the odd one out? (a) an electric toy car (b) a ceiling fan (c) an exhaust fan (d) a traffic signal
6. 6.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 1.5 V (c) 230 V (d) 9 V
7. 7.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
8. 8.True or false: a line lifted at a gap is the symbol for a resistor. (a) False (b) True
9. 9.Which of these mainly makes sound? (a) a loudspeaker (b) an LED lamp (c) a street light (d) a tube light
10. 10.🔋 What should you do with used-up cells? (a) give them for recycling (b) bury them in soil (c) cut them open (d) throw them in a fire
11. 11.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
12. 12.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
13. 13.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
14. 14.Which drawing is the symbol for a diode? (a) a line lifted at a gap (b) a circle with an X in it (c) two equal parallel lines (d) triangle against a bar
15. 15.Which of these is true of a series circuit? (a) each gets the full volts (b) a single current path (c) own switch for each bulb (d) many paths for current
16. 16.Which of these means the circuit is open? (a) the loop is complete (b) the switch is ON (c) all wires are joined (d) a cell is taken out
17. 17.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the steel shaft (c) the bare end (d) the plastic handle
18. 18.🔌 Which metal is used for most electric wires at home? (a) copper (b) glass (c) rubber (d) plastic
19. 19.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
20. 20.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
21. 21.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) one out, the rest glow (c) one bulb out, all go out (d) a single current path
22. 22.True or false: if a cell is taken out, the circuit is open and no current flows. (a) False (b) True
23. 23.⚡ What does an LED lamp mainly change electricity into? (a) movement (b) heat (c) light (d) sound
24. 24.🔍 Which is the odd one out? (a) use small battery cells (b) take cells out after use (c) touch a switch when wet (d) stop if a part gets hot
25. 25.⚠️ Is it safe to use a cable with cuts? (a) not safe (b) safe
26. 26.True or false: a cotton thread is an insulator. (a) False (b) True
27. 27.💡 In a series circuit, how many paths does the current have? (a) two (b) one (c) one for each bulb (d) none
28. 28.True or false: if the switch is OFF, the circuit is closed and current flows. (a) True (b) False
29. 29.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
30. 30.Which of these uses electricity? (a) a bicycle dynamo (b) a power station (c) a washing machine (d) a solar panel
31. 31.True or false: an iron nail is a conductor. (a) True (b) False
32. 32.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) ammeter (c) wire (d) motor
33. 33.Which of these means the circuit is closed? (a) a cell is taken out (b) the switch is OFF (c) all wires are joined (d) the bulb is unscrewed
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) junction (b) battery (c) switch (d) bulb
35. 35.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
36. 36.⚡ What does a buzzer mainly change electricity into? (a) light (b) sound (c) heat (d) movement
37. 37.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a long wire (c) a plug top (d) a bulb
38. 38.🔍 Which is the odd one out? (a) a torch (b) a tube light (c) a buzzer (d) an LED lamp
39. 39.🔍 Which is the odd one out? (a) a copper wire (b) a dry cork (c) a steel coin (d) an iron nail
40. 40.🔋 3 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =

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