Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 661 · 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.True or false: an electric drill mainly makes movement. (a) False (b) True
2. 2.What does a toggle switch do? (a) springs back when let go (b) closes when tipped over (c) flips up or down (d) slides side to side
3. 3.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
4. 4.True or false: “each gets the full volts” is true of a parallel circuit. (a) True (b) False
5. 5.🔋 How many 3 V cells must be joined in series to give 6 V?
6. 6.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) water drops (c) electrons (d) dust particles
7. 7.💡 5 identical bulbs are joined in series with a 10 V battery (ideal wires). How many volts does each bulb get? =
8. 8.🔗 Series or parallel circuit: “a break stops every bulb”? (a) parallel (b) series
9. 9.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
10. 10.True or false: “many paths for current” is true of a parallel circuit. (a) False (b) True
11. 11.🔋 How many 1.2 V cells must be joined in series to give 6 V?
12. 12.🔋 8 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
13. 13.What does a tilt switch do? (a) stays where you flip it (b) closes when tipped over (c) flips up or down (d) works only while pressed
14. 14.🔋 What should you do with used-up cells? (a) give them for recycling (b) cut them open (c) throw them in a fire (d) bury them in soil
15. 15.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 2 is taken out of its holder. Does bulb 1 glow? (a) Yes (b) No
16. 16.Which of these is true of a series circuit? (a) own switch for each bulb (b) a break stops every bulb (c) many paths for current (d) each gets the full volts
17. 17.True or false: to use small battery cells is safe. (a) False (b) True
18. 18.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
19. 19.🔋 4 identical 3 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
20. 20.🔦 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 paper strip. Does the bulb glow? (a) Yes (b) No
21. 21.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a copper wire across the gap. Does the bulb glow? (a) No (b) Yes
22. 22.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
23. 23.🔍 Which is the odd one out? (a) fly a kite near wires (b) take cells out after use (c) climb an electric pole (d) poke things in a socket
24. 24.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) stop if a part gets hot (b) fly a kite near wires (c) dry your hands first (d) build with an adult near
26. 26.🔘 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 ON and C is ON. Does the bulb glow? (a) Yes (b) No
27. 27.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) diode (c) motor (d) resistor
28. 28.Which of these gives us electricity? (a) a mobile phone (b) a television (c) an air conditioner (d) a bicycle dynamo
29. 29.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
30. 30.Which of these mainly makes movement? (a) a street light (b) a loudspeaker (c) a mixer grinder (d) a tube light
31. 31.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) cell (b) bulb (c) diode (d) junction
32. 32.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) resistor (b) bulb (c) switch (d) diode
33. 33.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) junction (b) LED (c) battery (d) switch
34. 34.⚡ What does a mixer grinder mainly change electricity into? (a) heat (b) light (c) movement (d) sound
35. 35.Which of these is safe? (a) poke things in a socket (b) dry your hands first (c) touch a switch when wet (d) use mains for a project
36. 36.🔘 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) No (b) Yes
37. 37.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) by Wi-Fi (b) not joined (c) in series (d) in parallel
38. 38.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) half the voltage (d) no voltage
39. 39.💡 In a series circuit, how many paths does the current have? (a) two (b) one for each bulb (c) one (d) none
40. 40.💡 2 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 2 is taken out of its holder. How many bulbs glow?

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