Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 281 · 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 toggle switch do? (a) closes when tipped over (b) stays where you flip it (c) slides side to side (d) works only while pressed
2. 2.🔍 Which is the odd one out? (a) fly kites in open fields (b) keep drinks far away (c) use small battery cells (d) open a phone charger
3. 3.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
4. 4.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
5. 5.🔌 Is a safety pin a conductor or an insulator? (a) a conductor (b) an insulator
6. 6.💡 A battery lights 5 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) dimmer (b) brighter (c) the same
7. 7.🔋 Does a refrigerator give electricity or use electricity? (a) uses electricity (b) gives electricity
8. 8.🔌 Is a copper wire a conductor or an insulator? (a) a conductor (b) an insulator
9. 9.💡 A battery lights 2 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) the same (c) dimmer
10. 10.🔘 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
11. 11.What does a slide switch do? (a) springs back when let go (b) stays where you flip it (c) works only while pressed (d) slides side to side
12. 12.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
13. 13.Which of these is a conductor? (a) a wooden stick (b) a cotton thread (c) a graphite rod (d) a dry cork
14. 14.🔋 5 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)? =
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) neither line (d) the shorter line
16. 16.True or false: triangle against a bar is the symbol for a diode. (a) False (b) True
17. 17.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put aluminium foil across the gap. Does the bulb glow? (a) Yes (b) No
18. 18.🔘 Which kind of switch closes when tipped over? (a) a toggle switch (b) a push button (c) a slide switch (d) a tilt switch
19. 19.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a trusted adult (c) a stranger online (d) nobody
20. 20.🔋 3 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
21. 21.Which of these mainly makes movement? (a) an electric iron (b) a night lamp (c) an LED lamp (d) a mixer grinder
22. 22.🔍 Which is the odd one out? (a) fly kites in open fields (b) build with an adult near (c) use a cable with cuts (d) use small battery cells
23. 23.True or false: “a single current path” is true of a series circuit. (a) False (b) True
24. 24.🔋 2 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
25. 25.⚡ What does a buzzer mainly change electricity into? (a) movement (b) light (c) sound (d) heat
26. 26.Which drawing is the symbol for a junction? (a) a circle with M inside (b) triangle, bar and arrows (c) a dot where wires meet (d) many long-short pairs
27. 27.True or false: an LED lamp mainly gives out light. (a) False (b) True
28. 28.🔘 A bulb and a cell are joined through 6 switches on 6 side-by-side paths, one switch on each path (parallel). What is the smallest number of switches that must be ON to light the bulb?
29. 29.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
30. 30.True or false: a slide switch works only while pressed. (a) True (b) False
31. 31.💡 Why is house wiring done in parallel? (a) each gets full voltage (b) to make bulbs dim (c) so all go off together (d) to save copper only
32. 32.Which drawing is the symbol for a cell? (a) a circle with an X in it (b) one tall, one short bar (c) a circle with M inside (d) a straight line
33. 33.⚠️ Is it safe to throw cells in a fire? (a) not safe (b) safe
34. 34.🔋 6 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
35. 35.🔍 Which is the odd one out? (a) an electric toy car (b) a mixer grinder (c) an exhaust fan (d) a torch
36. 36.True or false: a reed switch works only while pressed. (a) False (b) True
37. 37.🔘 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
38. 38.💡 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. Bulb 3 is taken out of its holder. Does bulb 5 glow? (a) Yes (b) No
39. 39.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) water drops (c) photons (d) dust particles
40. 40.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a reed switch (c) a push button (d) a slide switch

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