Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 855 · 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 is the odd one out? (a) a plastic ruler (b) a rubber band (c) a plastic straw (d) a metal paper clip
2. 2.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
3. 3.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
4. 4.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) used in house wiring (c) bulbs share the voltage (d) one bulb out, all go out
5. 5.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
6. 6.True or false: a tilt switch flips up or down. (a) False (b) True
7. 7.🔋 How many volts does one ordinary torch cell give? (a) 230 V (b) 0.5 V (c) 15 V (d) 1.5 V
8. 8.🔌 Is a cotton thread a conductor or an insulator? (a) an insulator (b) a conductor
9. 9.Which drawing is the symbol for a voltmeter? (a) two equal parallel lines (b) a long and a short line (c) a circle with V inside (d) a circle with M inside
10. 10.True or false: a circle with V inside is the symbol for a voltmeter. (a) True (b) False
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a ceramic cup across the gap. Does the bulb glow? (a) No (b) Yes
12. 12.🔍 Which is the odd one out? (a) a steel coin (b) a glass marble (c) a plastic straw (d) a ceramic cup
13. 13.🔋 3 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
14. 14.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) one bulb out, all go out (d) each gets the full volts
15. 15.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
16. 16.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
17. 17.🔘 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) No (b) Yes
18. 18.🔦 A circuit has a new cell, a bulb with a broken filament and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a wooden stick. Does the bulb glow? (a) Yes (b) No
19. 19.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) switch (b) LED (c) diode (d) battery
20. 20.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) + (positive) (b) − (negative)
21. 21.True or false: a straight line is the symbol for a wire. (a) False (b) True
22. 22.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
23. 23.💡 3 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
24. 24.🔦 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
25. 25.True or false: “a single current path” is true of a series circuit. (a) True (b) False
26. 26.Which of these mainly makes sound? (a) an electric iron (b) a table fan (c) a mixer grinder (d) a loudspeaker
27. 27.Which of these means the circuit is open? (a) a wire is cut (b) all wires are joined (c) the loop is complete (d) the switch is ON
28. 28.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) a magnet (c) electric current (d) friction
29. 29.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
30. 30.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) a safe circuit (c) a short circuit (d) an open circuit
31. 31.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) a metal paper clip (c) a steel spoon (d) a ceramic cup
33. 33.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) capacitor (b) cell (c) switch (d) ammeter
34. 34.True or false: “one bulb out, all go out” is true of a parallel circuit. (a) False (b) True
35. 35.🔘 Which kind of switch slides side to side? (a) a slide switch (b) a tilt switch (c) a toggle switch (d) a push button
36. 36.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they get dimmer (b) they keep glowing (c) they all go out (d) they explode
37. 37.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
38. 38.True or false: “own switch for each bulb” is true of a series circuit. (a) True (b) False
39. 39.What does a slide switch do? (a) works only while pressed (b) flips up or down (c) springs back when let go (d) slides side to side
40. 40.🔌 Why are electric wires covered in plastic? (a) plastic is a conductor (b) to make them heavy (c) plastic is an insulator (d) plastic makes current

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