Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 854 · 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.🔋 Does a solar panel give electricity or use electricity? (a) gives electricity (b) uses electricity
2. 2.💡 In a series circuit, how many paths does the current have? (a) none (b) two (c) one (d) one for each bulb
3. 3.🔗 Series or parallel circuit: “many paths for current”? (a) series (b) parallel
4. 4.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) to save copper only (d) so all go off together
5. 5.🔌 A gap of dry air between two wires acts as … (a) a switch that is ON (b) an insulator (c) a cell (d) a conductor
6. 6.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is ON and C is OFF. Does the bulb glow? (a) No (b) Yes
7. 7.🔋 7 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)? =
8. 8.🔋 What should you do with used-up cells? (a) bury them in soil (b) cut them open (c) throw them in a fire (d) give them for recycling
9. 9.⚡ A cell changes stored chemical energy into which kind of energy? (a) sound energy (b) wind energy (c) nuclear energy (d) electrical energy
10. 10.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is OFF. Does the bulb glow? (a) Yes (b) No
11. 11.Which of these is a conductor? (a) a plastic ruler (b) a paper strip (c) a rubber band (d) an iron nail
12. 12.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
13. 13.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by aluminium foil. Does the bulb glow? (a) Yes (b) No
14. 14.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the bare end (c) the steel shaft (d) the plastic handle
15. 15.True or false: on a cell, “the shorter symbol line” means the − (negative) end. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a wooden stick (b) a glass marble (c) a cotton thread (d) a steel spoon
17. 17.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 1 glow? (a) No (b) Yes
18. 18.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
19. 19.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. Does bulb 5 glow? (a) No (b) Yes
20. 20.True or false: a long and a short line is the symbol for a switch. (a) True (b) False
21. 21.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) + (positive) (b) − (negative)
22. 22.💡 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?
23. 23.💡 6 identical bulbs are in parallel and each one takes 0.25 A. What total current (in amperes) comes from the battery? =
24. 24.True or false: two equal parallel lines is the symbol for a capacitor. (a) True (b) False
25. 25.True or false: on a cell, “the flat end” means the + (positive) end. (a) True (b) False
26. 26.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) by Wi-Fi (c) in series (d) not joined
27. 27.🔋 How many 1.5 V cells must be joined in series to give 6 V?
28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a metal paper clip across the gap. Does the bulb glow? (a) No (b) Yes
29. 29.🔋 6 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
30. 30.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a younger child (d) a trusted adult
31. 31.🔋 Does a washing machine give electricity or use electricity? (a) gives electricity (b) uses electricity
32. 32.💡 4 identical bulbs are joined in series with an 8 V battery (ideal wires). How many volts does each bulb get? =
33. 33.🔋 How many 3 V cells must be joined in series to give 6 V?
34. 34.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) diode (b) junction (c) battery (d) LED
35. 35.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
36. 36.💡 2 identical bulbs are joined in series with a 6 V battery (ideal wires). How many volts does each bulb get? =
37. 37.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) symbols are heavier (c) to hide the circuit (d) to make it colourful
38. 38.🔘 A cell and a bulb are joined to 4 side-by-side paths with one switch on each path — A, B, C and D (parallel). A is ON, B is ON, C is ON and D is ON. Does the bulb glow? (a) Yes (b) No
39. 39.⚡ What does an electric iron mainly change electricity into? (a) sound (b) heat (c) movement (d) light
40. 40.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) a bigger voltage (c) a smaller voltage (d) no voltage

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