Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 487 · 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.⚡ What does a toaster mainly change electricity into? (a) movement (b) sound (c) light (d) heat
2. 2.Which drawing is the symbol for an ammeter? (a) triangle against a bar (b) a circle with M inside (c) a circle with A inside (d) a straight line
3. 3.🔌 Most metals are good … (a) conductors (b) insulators (c) batteries (d) magnets only
4. 4.Which of these is true of a series circuit? (a) many paths for current (b) a break stops every bulb (c) each gets the full volts (d) own switch for each bulb
5. 5.🔦 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
6. 6.True or false: to touch a switch when wet is not safe. (a) True (b) False
7. 7.True or false: a rice cooker mainly gives out heat. (a) True (b) False
8. 8.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
9. 9.Which of these is an insulator? (a) a graphite rod (b) a steel coin (c) an iron nail (d) a plastic ruler
10. 10.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) dotted circles (d) straight lines
11. 11.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) diode (b) battery (c) motor (d) junction
12. 12.🔁 What must there be for a current to flow? (a) a plastic gap (b) a complete loop (c) a broken path (d) one loose end
13. 13.True or false: a slide switch slides side to side. (a) True (b) False
14. 14.Which of these is true of a series circuit? (a) many paths for current (b) each gets the full volts (c) bulbs share the voltage (d) one out, the rest glow
15. 15.💡 6 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
16. 16.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) LED (b) cell (c) voltmeter (d) ammeter
17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a dry cork across the gap. Does the bulb glow? (a) No (b) Yes
18. 18.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
19. 19.Which drawing is the symbol for a wire? (a) a straight line (b) a circle with a cross (c) a plain rectangle (d) two equal parallel lines
20. 20.🔍 Which is the odd one out? (a) keep drinks far away (b) stop if a part gets hot (c) climb an electric pole (d) take cells out after use
21. 21.Which drawing is the symbol for a switch? (a) triangle, bar and arrows (b) a line lifted at a gap (c) a circle with a cross (d) many long-short pairs
22. 22.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
23. 23.Which of these is not safe? (a) fly kites in open fields (b) build with an adult near (c) take cells out after use (d) use a cable with cuts
24. 24.Which drawing is the symbol for a diode? (a) one tall, one short bar (b) triangle against a bar (c) two or more cell symbols (d) a small empty box
25. 25.🔘 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 ON, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
26. 26.🔋 Identical cells side by side (in parallel) give … (a) no voltage (b) double the voltage (c) half the voltage (d) the same voltage
27. 27.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
28. 28.⚡ What does a street light mainly change electricity into? (a) heat (b) light (c) movement (d) sound
29. 29.⚠️ Is it safe to keep drinks far away? (a) safe (b) not safe
30. 30.🔍 Which is the odd one out? (a) touch a fallen wire (b) touch a switch when wet (c) keep drinks far away (d) fly a kite near wires
31. 31.🔍 Which is the odd one out? (a) a rubber band (b) a copper wire (c) aluminium foil (d) an iron nail
32. 32.What does a toggle switch do? (a) closes near a magnet (b) works only while pressed (c) flips up or down (d) closes when tipped over
33. 33.Which of these means the circuit is closed? (a) a wire is cut (b) the bulb is unscrewed (c) all wires are joined (d) a cell is taken out
34. 34.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) diode (b) junction (c) motor (d) bulb
35. 35.True or false: a circle with A inside is the symbol for a resistor. (a) False (b) True
36. 36.💡 Why is house wiring done in parallel? (a) to make bulbs dim (b) so all go off together (c) to save copper only (d) each gets full voltage
37. 37.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) the same (c) brighter
38. 38.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
39. 39.⚡ Which tiny particles drift along a metal wire to carry the current? (a) water drops (b) photons (c) electrons (d) dust particles
40. 40.💡 5 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. All the bulbs are in place. Does bulb 5 glow? (a) No (b) Yes

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