Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 329 · 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 break stops every bulb” is true of a series circuit. (a) False (b) True
2. 2.🔦 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 plastic ruler. Does the bulb glow? (a) Yes (b) No
3. 3.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a graphite rod across the gap. Does the bulb glow? (a) Yes (b) No
4. 4.🔍 Which is the odd one out? (a) climb an electric pole (b) poke things in a socket (c) touch a fallen wire (d) build with an adult near
5. 5.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a parallel circuit (c) a safe circuit (d) a short circuit
6. 6.🔍 Which is the odd one out? (a) build with an adult near (b) fly kites in open fields (c) touch a switch when wet (d) keep drinks far away
7. 7.Which of these mainly gives out light? (a) a school bell (b) a loudspeaker (c) a torch (d) a mixer grinder
8. 8.True or false: a mixer grinder mainly makes movement. (a) True (b) False
9. 9.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
10. 10.💡 5 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
11. 11.🔌 Is a glass marble a conductor or an insulator? (a) an insulator (b) a conductor
12. 12.💡 In a series circuit, how many paths does the current have? (a) none (b) one for each bulb (c) one (d) two
13. 13.⚡ What does an electric drill mainly change electricity into? (a) movement (b) sound (c) light (d) heat
14. 14.Which drawing is the symbol for a capacitor? (a) two or more cell symbols (b) triangle against a bar (c) two equal parallel lines (d) a circle with a cross
15. 15.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) dust particles (c) electrons (d) water drops
16. 16.True or false: “own switch for each bulb” is true of a series circuit. (a) False (b) True
17. 17.⚠️ Who should be with you when you build a circuit? (a) nobody (b) a stranger online (c) a younger child (d) a trusted adult
18. 18.✏️ Why do engineers draw circuits with symbols? (a) to hide the circuit (b) to make it colourful (c) quick and clear for all (d) symbols are heavier
19. 19.Which of these is an insulator? (a) a steel coin (b) a ceramic cup (c) a copper wire (d) a steel spoon
20. 20.🔍 Which is the odd one out? (a) throw cells in a fire (b) touch a fallen wire (c) fly a kite near wires (d) use small battery cells
21. 21.🔌 Is a rubber band a conductor or an insulator? (a) an insulator (b) a conductor
22. 22.🔋 A 9 V battery and two 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
23. 23.Which of these is a conductor? (a) a cotton thread (b) a rubber eraser (c) a woollen thread (d) a brass key
24. 24.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
25. 25.Which of these is a conductor? (a) a wooden stick (b) a plastic straw (c) a glass marble (d) a steel spoon
26. 26.🔍 Which is the odd one out? (a) a ceiling fan (b) a tube light (c) an electric toy car (d) an electric drill
27. 27.💡 5 identical bulbs are in parallel and each one takes 1 A. What total current (in amperes) comes from the battery? =
28. 28.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) wavy lines (c) dotted circles (d) straight lines
29. 29.True or false: a slide switch works only while pressed. (a) True (b) False
30. 30.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
31. 31.⚡ What does a rice cooker mainly change electricity into? (a) sound (b) heat (c) light (d) movement
32. 32.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the metal tip (d) the steel shaft
33. 33.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
34. 34.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 1.5 V (c) 230 V (d) 9 V
35. 35.True or false: “own switch for each bulb” is true of a parallel circuit. (a) True (b) False
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 ON and C is ON. Does the bulb glow? (a) No (b) Yes
37. 37.True or false: if the switch is OFF, the circuit is closed and current flows. (a) True (b) False
38. 38.🔦 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
39. 39.🔘 Which kind of switch stays where you flip it? (a) a push button (b) a tilt switch (c) a slide switch (d) a toggle switch
40. 40.What does a slide switch do? (a) slides side to side (b) works only while pressed (c) springs back when let go (d) closes when tipped over

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids