Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 494 · 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 flips up or down? (a) a push button (b) a toggle switch (c) a tilt switch (d) a reed switch
2. 2.True or false: “a single current path” is true of a parallel circuit. (a) False (b) True
3. 3.💡 2 identical bulbs are joined in parallel across a 9 V battery (ideal wires). How many volts does each bulb get? =
4. 4.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
5. 5.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
6. 6.Which of these is a conductor? (a) a steel spoon (b) a wooden stick (c) a rubber band (d) a glass marble
7. 7.True or false: on a cell, “usually the red wire” means the − (negative) end. (a) False (b) True
8. 8.True or false: triangle, bar and arrows is the symbol for a resistor. (a) True (b) False
9. 9.🔦 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) Yes (b) No
10. 10.🔁 Is the circuit closed or open if a wire is cut? (a) closed (b) open
11. 11.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) never (c) when both are OFF (d) when either is ON
12. 12.True or false: “one bulb out, all go out” is true of a series circuit. (a) False (b) True
13. 13.💡 3 identical bulbs are joined in parallel across a 1.5 V battery (ideal wires). How many volts does each bulb get? =
14. 14.💡 4 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 2 and 3 are taken out of their holders. How many bulbs glow?
15. 15.Which of these means the circuit is closed? (a) all wires are joined (b) the switch is OFF (c) a wire has come loose (d) a cell is taken out
16. 16.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) an open circuit (c) a series circuit (d) a full circuit
17. 17.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
18. 18.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) so all go off together (c) to make bulbs dim (d) to save copper only
19. 19.🔋 4 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
20. 20.🔁 What must there be for a current to flow? (a) a broken path (b) one loose end (c) a complete loop (d) a plastic gap
21. 21.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) dust particles (d) electrons
22. 22.Which drawing is the symbol for a voltmeter? (a) many long-short pairs (b) a straight line (c) a circle with M inside (d) a circle with V inside
23. 23.🔦 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 wooden stick. Does the bulb glow? (a) Yes (b) No
24. 24.True or false: “a single current path” is true of a series circuit. (a) True (b) False
25. 25.Which of these is true of a parallel circuit? (a) a single current path (b) a break stops every bulb (c) used in house wiring (d) one bulb out, all go out
26. 26.🔋 Does a bicycle dynamo give electricity or use electricity? (a) uses electricity (b) gives electricity
27. 27.Which of these is true of a series circuit? (a) own switch for each bulb (b) used in house wiring (c) bulbs share the voltage (d) many paths for current
28. 28.🔦 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 aluminium foil. Does the bulb glow? (a) Yes (b) No
29. 29.💡 5 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
30. 30.🔍 Which is the odd one out? (a) stay away from pylons (b) climb an electric pole (c) poke things in a socket (d) fly a kite near wires
31. 31.🔦 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 steel spoon. Does the bulb glow? (a) No (b) Yes
32. 32.🔘 Which kind of switch stays where you flip it? (a) a slide switch (b) a toggle switch (c) a reed switch (d) a push button
33. 33.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No
34. 34.🔋 8 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
35. 35.💡 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?
36. 36.🔦 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 glass marble. Does the bulb glow? (a) Yes (b) No
37. 37.🔗 Series or parallel circuit: “used in house wiring”? (a) series (b) parallel
38. 38.🔌 Is a graphite rod a conductor or an insulator? (a) an insulator (b) a conductor
39. 39.🔍 Which is the odd one out? (a) poke things in a socket (b) climb an electric pole (c) stop if a part gets hot (d) touch a switch when wet
40. 40.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity

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