Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 795 · 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.✏️ In a circuit diagram, which part is drawn as a dot where wires meet? (a) junction (b) motor (c) diode (d) ammeter
2. 2.💡 3 identical bulbs are joined in parallel across a 6 V battery (ideal wires). How many volts does each bulb get? =
3. 3.🔌 Is a copper wire a conductor or an insulator? (a) an insulator (b) a conductor
4. 4.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
5. 5.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) dotted circles (d) wavy lines
6. 6.🔘 A cell and a bulb are joined to 3 side-by-side paths with one switch on each path — A, B and C (parallel). A is OFF, B is ON and C is OFF. Does the bulb glow? (a) Yes (b) No
7. 7.⚠️ About how many volts do home sockets in India supply? (a) 230 V (b) 12 V (c) 1.5 V (d) 9 V
8. 8.Which of these is a conductor? (a) a graphite rod (b) a plastic ruler (c) a dry cork (d) a cotton thread
9. 9.🔌 Why are electric wires covered in plastic? (a) plastic is an insulator (b) plastic makes current (c) plastic is a conductor (d) to make them heavy
10. 10.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
11. 11.🔗 Series or parallel circuit: “own switch for each bulb”? (a) parallel (b) series
12. 12.Which of these is not safe? (a) use small battery cells (b) build with an adult near (c) use a cable with cuts (d) keep drinks far away
13. 13.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) capacitor (b) diode (c) resistor (d) motor
14. 14.⚡ What does a loudspeaker mainly change electricity into? (a) heat (b) light (c) movement (d) sound
15. 15.🔍 Which is the odd one out? (a) dry your hands first (b) take cells out after use (c) stop if a part gets hot (d) open a phone charger
16. 16.Which of these is safe? (a) climb an electric pole (b) use mains for a project (c) stay away from pylons (d) touch a switch when wet
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) a copper wire (c) a graphite rod (d) a rubber eraser
18. 18.⚡ Which tiny particles drift along a metal wire to carry the current? (a) electrons (b) photons (c) water drops (d) dust particles
19. 19.True or false: a ceiling fan mainly gives out heat. (a) False (b) True
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 metal paper clip. Does the bulb glow? (a) Yes (b) No
21. 21.💡 4 identical bulbs are in parallel and each one takes 1.5 A. What total current (in amperes) comes from the battery? =
22. 22.Which of these is true of a series circuit? (a) a break stops every bulb (b) one out, the rest glow (c) own switch for each bulb (d) many paths for current
23. 23.🔦 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 rubber band. Does the bulb glow? (a) Yes (b) No
24. 24.True or false: “a break stops every bulb” is true of a parallel circuit. (a) True (b) False
25. 25.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a younger child (c) a trusted adult (d) nobody
26. 26.🔋 2 identical 2 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
27. 27.💡 4 identical bulbs are joined in series with an 8 V battery (ideal wires). How many volts does each bulb get? =
28. 28.Which drawing is the symbol for an ammeter? (a) a circle with A inside (b) a circle with V inside (c) a circle with M inside (d) one tall, one short bar
29. 29.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
30. 30.🔘 Which kind of switch works only while pressed? (a) a toggle switch (b) a push button (c) a tilt switch (d) a reed switch
31. 31.True or false: “bulbs share the voltage” is true of a series circuit. (a) False (b) True
32. 32.⚠️ Is it safe to touch a switch when wet? (a) safe (b) not safe
33. 33.True or false: a toggle switch flips up or down. (a) True (b) False
34. 34.⚠️ Is it safe to stay away from pylons? (a) safe (b) not safe
35. 35.🔌 Is a ceramic cup a conductor or an insulator? (a) an insulator (b) a conductor
36. 36.True or false: “own switch for each bulb” is true of a parallel circuit. (a) False (b) True
37. 37.True or false: if the switch is OFF, the circuit is open and no current flows. (a) True (b) False
38. 38.Which of these mainly gives out heat? (a) an electric iron (b) an electric drill (c) a ceiling fan (d) an exhaust fan
39. 39.Which drawing is the symbol for a battery? (a) a circle with V inside (b) two or more cell symbols (c) a plain rectangle (d) a circle with A inside
40. 40.🔁 What do we call a circuit with a break in it? (a) a full circuit (b) a series circuit (c) a closed circuit (d) an open circuit

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