Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 375 · 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 television give electricity or use electricity? (a) gives electricity (b) uses electricity
2. 2.🔘 A cell, a bulb and switches A, B and C are joined one after another in a single loop (series). A is ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
3. 3.What does a reed switch do? (a) closes when tipped over (b) works only while pressed (c) closes near a magnet (d) stays where you flip it
4. 4.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a tilt switch (c) a push button (d) a reed switch
5. 5.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) only one (b) none (c) both of them (d) it does not matter
6. 6.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they all go out (b) they explode (c) they get dimmer (d) they keep glowing
7. 7.🔋 What is a battery? (a) one single wire (b) a kind of bulb (c) two or more cells joined (d) a switch with a lid
8. 8.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a safety pin across the gap. Does the bulb glow? (a) No (b) Yes
9. 9.Which drawing is the symbol for a battery? (a) a circle with M inside (b) triangle against a bar (c) two or more cell symbols (d) a small empty box
10. 10.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
11. 11.True or false: a tilt switch stays where you flip it. (a) True (b) False
12. 12.💡 5 identical bulbs are joined in series with a 7.5 V battery (ideal wires). How many volts does each bulb get? =
13. 13.🔦 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) Yes (b) No
14. 14.True or false: a plastic straw is an insulator. (a) False (b) True
15. 15.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
16. 16.💡 A battery lights 4 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) the same (b) dimmer (c) brighter
17. 17.Which of these mainly gives out light? (a) a siren (b) a night lamp (c) a room heater (d) a rice cooker
18. 18.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 1.5 V (c) 230 V (d) 9 V
19. 19.🔋 Does a cell give electricity or use electricity? (a) gives electricity (b) uses electricity
20. 20.🔦 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 steel coin. Does the bulb glow? (a) No (b) Yes
21. 21.⚠️ Is it safe to keep drinks far away? (a) not safe (b) safe
22. 22.🔋 3 identical 1.2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
23. 23.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. Does the bulb glow? (a) No (b) Yes
24. 24.True or false: triangle against a bar is the symbol for a diode. (a) True (b) False
25. 25.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a cotton thread across the gap. Does the bulb glow? (a) No (b) Yes
26. 26.Which drawing is the symbol for a bulb? (a) a circle with a cross (b) a line lifted at a gap (c) triangle against a bar (d) a circle with V inside
27. 27.🔌 Is a wooden stick a conductor or an insulator? (a) a conductor (b) an insulator
28. 28.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
29. 29.True or false: if the switch is ON, the circuit is open and no current flows. (a) True (b) False
30. 30.🔘 A bulb and a cell are joined through 4 switches on 4 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?
31. 31.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the metal tip (c) the steel shaft (d) the plastic handle
32. 32.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) straight lines (c) dotted circles (d) little stars
33. 33.💡 4 identical bulbs are joined in series with a 4 V battery (ideal wires). How many volts does each bulb get? =
34. 34.Which of these mainly gives out heat? (a) a doorbell (b) an electric kettle (c) an exhaust fan (d) a siren
35. 35.True or false: a rice cooker mainly makes movement. (a) True (b) False
36. 36.💡 A battery lights 3 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
37. 37.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) not joined (b) in series (c) by Wi-Fi (d) in parallel
38. 38.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
39. 39.True or false: a push button works only while pressed. (a) True (b) False
40. 40.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True

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