Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 306 · 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.🔋 Identical cells side by side (in parallel) give … (a) the same voltage (b) double the voltage (c) no voltage (d) half the voltage
2. 2.⚠️ Is it safe to throw cells in a fire? (a) safe (b) not safe
3. 3.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) diode (b) ammeter (c) cell (d) bulb
4. 4.Which drawing is the symbol for a switch? (a) a line lifted at a gap (b) a dot where wires meet (c) a plain rectangle (d) two or more cell symbols
5. 5.🔘 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) No (b) Yes
6. 6.⚡ A fan changes electrical energy mainly into which kind of energy? (a) chemical energy (b) movement energy (c) sound energy (d) light energy
7. 7.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
8. 8.🔁 What must there be for a current to flow? (a) a plastic gap (b) a broken path (c) one loose end (d) a complete loop
9. 9.Which drawing is the symbol for a battery? (a) a dot where wires meet (b) many long-short pairs (c) a circle with an X in it (d) a small empty box
10. 10.Which of these uses electricity? (a) a power station (b) a cell (c) a wind turbine (d) a washing machine
11. 11.True or false: if the loop is complete, the circuit is closed and current flows. (a) False (b) True
12. 12.🔋 On a cell, does “the flat end” mean the + end or the − end? (a) − (negative) (b) + (positive)
13. 13.Which of these means the circuit is open? (a) the switch is ON (b) all wires are joined (c) the switch is OFF (d) the loop is complete
14. 14.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
15. 15.🔦 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) Yes (b) No
16. 16.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
17. 17.🔋 On a cell, does “the shorter symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
18. 18.Which drawing is the symbol for a bulb? (a) a long and a short line (b) one tall, one short bar (c) triangle, bar and arrows (d) a circle with a cross
19. 19.🔘 Which kind of switch springs back when let go? (a) a push button (b) a tilt switch (c) a reed switch (d) a slide switch
20. 20.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
21. 21.🔘 Which kind of switch flips up or down? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a toggle switch
22. 22.True or false: a plastic straw is an insulator. (a) False (b) True
23. 23.Which of these is true of a series circuit? (a) own switch for each bulb (b) each gets the full volts (c) bulbs share the voltage (d) many paths for current
24. 24.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
25. 25.🔋 What should you do with used-up cells? (a) give them for recycling (b) throw them in a fire (c) bury them in soil (d) cut them open
26. 26.What does a toggle switch do? (a) springs back when let go (b) works only while pressed (c) slides side to side (d) stays where you flip it
27. 27.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) it does not matter (b) only one (c) both of them (d) none
28. 28.Which drawing is the symbol for an LED? (a) two or more cell symbols (b) a long and a short line (c) triangle, bar and arrows (d) a small empty box
29. 29.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to save copper only (d) to make bulbs dim
30. 30.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
31. 31.True or false: a push button stays where you flip it. (a) True (b) False
32. 32.True or false: if the switch is ON, the circuit is closed and current flows. (a) False (b) True
33. 33.🔦 A circuit has a new cell, a good bulb and a switch that is ON. One wire has come loose from the cell. A gap in one wire is bridged by an iron nail. Does the bulb glow? (a) No (b) Yes
34. 34.Which of these is not safe? (a) build with an adult near (b) dry your hands first (c) keep drinks far away (d) fly a kite near wires
35. 35.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) a magnet (d) electric current
36. 36.💡 5 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
37. 37.🔌 Is a graphite rod a conductor or an insulator? (a) a conductor (b) an insulator
38. 38.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) False (b) True
39. 39.True or false: “many paths for current” is true of a series circuit. (a) False (b) True
40. 40.🔘 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 OFF and C is OFF. Does the bulb glow? (a) Yes (b) No

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