Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 171 · 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: a wooden stick is an insulator. (a) True (b) False
2. 2.Which of these uses electricity? (a) a power station (b) a mobile phone (c) a generator (d) a bicycle dynamo
3. 3.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) ammeter (b) resistor (c) capacitor (d) voltmeter
4. 4.✏️ In a cell symbol, which line is the + terminal? (a) neither line (b) both lines (c) the longer line (d) the shorter line
5. 5.🔋 What is a battery? (a) a switch with a lid (b) a kind of bulb (c) two or more cells joined (d) one single wire
6. 6.🔘 Which kind of switch springs back when let go? (a) a toggle switch (b) a slide switch (c) a reed switch (d) a push button
7. 7.Which drawing is the symbol for an LED? (a) a long and a short line (b) one tall, one short bar (c) triangle, bar and arrows (d) two or more cell symbols
8. 8.Which of these uses electricity? (a) a wind turbine (b) a bicycle dynamo (c) a water pump (d) a solar panel
9. 9.Which of these mainly makes movement? (a) an LED lamp (b) an electric kettle (c) a mixer grinder (d) a tube light
10. 10.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
11. 11.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 230 V (d) 12 V
12. 12.🔗 Series or parallel circuit: “a single current path”? (a) series (b) parallel
13. 13.Which of these is true of a series circuit? (a) own switch for each bulb (b) one out, the rest glow (c) bulbs share the voltage (d) used in house wiring
14. 14.💡 3 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. How many bulbs glow?
15. 15.🔦 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 aluminium foil. Does the bulb glow? (a) Yes (b) No
16. 16.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
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) Yes (b) No
18. 18.🔋 6 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
19. 19.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pour water on them (b) pull them by the hand (c) wait and watch (d) shout for an adult
20. 20.True or false: “each gets the full volts” is true of a parallel circuit. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) poke things in a socket (b) open a phone charger (c) use mains for a project (d) stop if a part gets hot
22. 22.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic straw (c) a copper wire (d) an iron nail
23. 23.🔋 8 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
24. 24.What does a reed switch do? (a) springs back when let go (b) slides side to side (c) works only while pressed (d) closes near a magnet
25. 25.Which of these is true of a series circuit? (a) many paths for current (b) own switch for each bulb (c) one out, the rest glow (d) a single current path
26. 26.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) chemical energy (c) movement energy (d) sound energy
27. 27.💡 5 identical bulbs are joined in parallel across a 3 V battery (ideal wires). How many volts does each bulb get? =
28. 28.🔍 Which is the odd one out? (a) use a cable with cuts (b) touch a fallen wire (c) dry your hands first (d) poke things in a socket
29. 29.Which of these is a conductor? (a) a paper strip (b) a graphite rod (c) a dry cork (d) a ceramic cup
30. 30.💡 2 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
31. 31.True or false: to fly a kite near wires is not safe. (a) False (b) True
32. 32.🔌 Is a plastic straw a conductor or an insulator? (a) a conductor (b) an insulator
33. 33.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
34. 34.🔁 What do we call a circuit with a break in it? (a) a series circuit (b) a full circuit (c) an open circuit (d) a closed circuit
35. 35.🔋 What should you do with used-up cells? (a) cut them open (b) give them for recycling (c) throw them in a fire (d) bury them in soil
36. 36.Which of these means the circuit is open? (a) the switch is ON (b) the loop is complete (c) the switch is OFF (d) all wires are joined
37. 37.⚡ What does a table fan mainly change electricity into? (a) sound (b) heat (c) light (d) movement
38. 38.🔍 Which is the odd one out? (a) a tube light (b) a street light (c) an electric iron (d) an LED lamp
39. 39.Which of these is an insulator? (a) a glass marble (b) a steel coin (c) an iron nail (d) a copper wire
40. 40.Which of these mainly makes movement? (a) an electric toy car (b) a rice cooker (c) a street light (d) an electric kettle

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