Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 566 · 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 drawing is the symbol for a voltmeter? (a) a circle with V inside (b) a circle with a cross (c) a small empty box (d) a long and a short line
2. 2.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
3. 3.🔋 What should you do with used-up cells? (a) throw them in a fire (b) give them for recycling (c) bury them in soil (d) cut them open
4. 4.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
5. 5.🔦 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
6. 6.⚠️ Is it safe to build with an adult near? (a) not safe (b) safe
7. 7.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
8. 8.🔋 A 12 V battery and four 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
9. 9.🔍 Which is the odd one out? (a) fly a kite near wires (b) climb an electric pole (c) touch a fallen wire (d) use small battery cells
10. 10.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) True (b) False
11. 11.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
12. 12.🔦 A circuit has a used-up (dead) 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 plastic straw. Does the bulb glow? (a) No (b) Yes
13. 13.🔋 What is a battery? (a) a switch with a lid (b) two or more cells joined (c) a kind of bulb (d) one single wire
14. 14.True or false: a toggle switch flips up or down. (a) True (b) False
15. 15.True or false: one tall, one short bar is the symbol for a wire. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a plastic straw (b) a glass marble (c) a dry cork (d) a metal paper clip
17. 17.🔘 Which kind of switch works only while pressed? (a) a slide switch (b) a push button (c) a toggle switch (d) a reed switch
18. 18.🔗 Series or parallel circuit: “one out, the rest glow”? (a) series (b) parallel
19. 19.🔍 Which is the odd one out? (a) fly a kite near wires (b) use a cable with cuts (c) open a phone charger (d) stop if a part gets hot
20. 20.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
21. 21.🔌 Why are electric wires covered in plastic? (a) plastic makes current (b) plastic is an insulator (c) to make them heavy (d) plastic is a conductor
22. 22.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
23. 23.💡 5 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
24. 24.⚡ What does a toaster mainly change electricity into? (a) sound (b) heat (c) movement (d) light
25. 25.🔌 Is an iron nail a conductor or an insulator? (a) a conductor (b) an insulator
26. 26.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
27. 27.🔋 5 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
28. 28.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 1.5 V (c) 9 V (d) 12 V
29. 29.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
30. 30.Which of these is safe? (a) poke things in a socket (b) use mains for a project (c) throw cells in a fire (d) use small battery cells
31. 31.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) a break stops every bulb (c) own switch for each bulb (d) bulbs share the voltage
32. 32.True or false: a safety pin is a conductor. (a) False (b) True
33. 33.🔋 6 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
34. 34.True or false: a plastic straw is a conductor. (a) True (b) False
35. 35.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
36. 36.🔦 A circuit has a used-up (dead) 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 dry cork. Does the bulb glow? (a) Yes (b) No
37. 37.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) electric current (d) a magnet
38. 38.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) only one (c) both of them (d) it does not matter
39. 39.🔋 A 12 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
40. 40.✏️ In a circuit diagram, wires are usually drawn as … (a) straight lines (b) wavy lines (c) dotted circles (d) little stars

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