Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 341 · 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.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
2. 2.True or false: a push button springs back when let go. (a) False (b) True
3. 3.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in parallel (d) in series
4. 4.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a push button (c) a reed switch (d) a tilt switch
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) bulb (c) voltmeter (d) capacitor
6. 6.🔘 A cell, a bulb and switches A, B, C and D are joined one after another in a single loop (series). A is ON, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
7. 7.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a circle with V inside (c) a circle with A inside (d) a circle with M inside
8. 8.🔘 Which kind of switch springs back when let go? (a) a push button (b) a tilt switch (c) a reed switch (d) a toggle switch
9. 9.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pour water on them (d) pull them by the hand
10. 10.Which drawing is the symbol for a capacitor? (a) two equal parallel lines (b) one tall, one short bar (c) triangle, bar and arrows (d) a circle with an X in it
11. 11.✏️ In a circuit diagram, which part is drawn as a straight line? (a) bulb (b) wire (c) LED (d) switch
12. 12.True or false: an exhaust fan mainly gives out light. (a) False (b) True
13. 13.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
14. 14.True or false: a long and a short line is the symbol for a cell. (a) True (b) False
15. 15.🔋 7 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
16. 16.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) own switch for each bulb (d) bulbs share the voltage
17. 17.💡 2 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
18. 18.True or false: to build with an adult near is not safe. (a) True (b) False
19. 19.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
20. 20.🔦 A circuit has a used-up (dead) cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) Yes (b) No
21. 21.🔘 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 OFF. Does the bulb glow? (a) Yes (b) No
22. 22.Which of these mainly gives out heat? (a) a room heater (b) a school bell (c) a tube light (d) a doorbell
23. 23.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) throw cells in a fire (b) take cells out after use (c) use small battery cells (d) fly kites in open fields
25. 25.🔋 What should you do with used-up cells? (a) bury them in soil (b) give them for recycling (c) cut them open (d) throw them in a fire
26. 26.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
27. 27.🔋 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)? =
28. 28.🔍 Which is the odd one out? (a) a table fan (b) a traffic signal (c) a torch (d) a night lamp
29. 29.Which of these is an insulator? (a) a steel coin (b) a graphite rod (c) aluminium foil (d) a rubber band
30. 30.💡 4 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
31. 31.True or false: if all wires are joined, the circuit is closed and current flows. (a) True (b) False
32. 32.True or false: a school bell mainly gives out light. (a) True (b) False
33. 33.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 12 V (d) 230 V
34. 34.Which drawing is the symbol for a junction? (a) a circle with M inside (b) a dot where wires meet (c) a long and a short line (d) triangle, bar and arrows
35. 35.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
36. 36.Which drawing is the symbol for a cell? (a) a dot where wires meet (b) a long and a short line (c) a circle with a cross (d) a straight line
37. 37.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
38. 38.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) both lines (c) neither line (d) the longer line
39. 39.💡 2 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
40. 40.🔘 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

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