Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 47 · 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.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
2. 2.True or false: a straight line is the symbol for a capacitor. (a) True (b) False
3. 3.⚠️ About how many volts do home sockets in India supply? (a) 1.5 V (b) 230 V (c) 9 V (d) 12 V
4. 4.🔗 Series or parallel circuit: “many paths for current”? (a) parallel (b) series
5. 5.Which of these mainly gives out light? (a) an exhaust fan (b) a loudspeaker (c) a night lamp (d) a water heater
6. 6.Which of these uses electricity? (a) a bicycle dynamo (b) a cell (c) an air conditioner (d) a wind turbine
7. 7.🔍 Which is the odd one out? (a) a safety pin (b) a wooden stick (c) a glass marble (d) a plastic straw
8. 8.Which of these is an insulator? (a) an iron nail (b) a plastic ruler (c) a graphite rod (d) a steel coin
9. 9.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) throw them in a fire (d) bury them in soil
10. 10.True or false: “one out, the rest glow” is true of a series circuit. (a) False (b) True
11. 11.🔘 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 ON and C is OFF. Does the bulb glow? (a) Yes (b) No
12. 12.🔍 Which is the odd one out? (a) use mains for a project (b) take cells out after use (c) stay away from pylons (d) stop if a part gets hot
13. 13.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a tilt switch (c) a slide switch (d) a push button
14. 14.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) wavy lines (d) straight lines
15. 15.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a safety pin. Does the bulb glow? (a) Yes (b) No
16. 16.🔘 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 OFF, B is ON and C is ON. Does the bulb glow? (a) No (b) Yes
17. 17.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) diode (b) bulb (c) ammeter (d) switch
18. 18.Which drawing is the symbol for an LED? (a) triangle, bar and arrows (b) a circle with an X in it (c) a long and a short line (d) two or more cell symbols
19. 19.Which of these uses electricity? (a) a bicycle dynamo (b) a computer (c) a wind turbine (d) a generator
20. 20.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) only one (b) it does not matter (c) none (d) both of them
21. 21.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
22. 22.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) diode (c) wire (d) junction
23. 23.🔘 A bulb and a cell are joined through 2 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
24. 24.🔦 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
25. 25.⚡ What does a tube light mainly change electricity into? (a) light (b) heat (c) movement (d) sound
26. 26.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a rubber eraser. Does the bulb glow? (a) No (b) Yes
27. 27.⚡ What does a ceiling fan mainly change electricity into? (a) heat (b) movement (c) light (d) sound
28. 28.True or false: to stop if a part gets hot is not safe. (a) True (b) False
29. 29.✏️ In a circuit diagram, which part is drawn as many long-short pairs? (a) junction (b) battery (c) switch (d) ammeter
30. 30.🔦 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) No (b) Yes
31. 31.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the shorter line (c) the longer line (d) neither line
32. 32.🔋 A 9 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
33. 33.🔋 How many volts does one ordinary torch cell give? (a) 0.5 V (b) 15 V (c) 1.5 V (d) 230 V
34. 34.True or false: a tube light mainly gives out light. (a) False (b) True
35. 35.True or false: if the loop is complete, the circuit is open and no current flows. (a) False (b) True
36. 36.True or false: a circle with M inside is the symbol for a motor. (a) False (b) True
37. 37.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) True (b) False
38. 38.Which drawing is the symbol for a cell? (a) two or more cell symbols (b) one tall, one short bar (c) a circle with a cross (d) a straight line
39. 39.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) a series circuit (d) an open circuit
40. 40.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) dust particles (d) electrons

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids