← Part 1 test: electricity basics lesson New set →

Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 538 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.Which of these mainly makes sound? (a) an LED lamp (b) a table fan (c) a siren (d) a street light
  2. 2.True or false: to dry your hands first is not safe. (a) True (b) False
  3. 3.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) − (negative) (b) + (positive)
  5. 5.💡 2 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
  6. 6.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
  7. 7.🔋 3 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)? =
  8. 8.🔋 On a cell, does “usually the black wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
  9. 9.True or false: “used in house wiring” is true of a parallel circuit. (a) True (b) False
  10. 10.⚠️ Is it safe to open a phone charger? (a) safe (b) not safe
  11. 11.Which of these means the circuit is closed? (a) a wire has come loose (b) all wires are joined (c) the switch is OFF (d) the bulb is unscrewed
  12. 12.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
  13. 13.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
  14. 14.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a safe circuit (c) a parallel circuit (d) a short circuit
  15. 15.🔌 Most metals are good … (a) batteries (b) insulators (c) magnets only (d) conductors
  16. 16.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
  17. 17.🔋 On a cell, does “the end with a bump” mean the + end or the − end? (a) − (negative) (b) + (positive)
  18. 18.🔋 Does a power station give electricity or use electricity? (a) uses electricity (b) gives electricity
  19. 19.Which of these is an insulator? (a) a steel coin (b) a brass key (c) a cotton thread (d) aluminium foil
  20. 20.True or false: on a cell, “the end with a bump” means the − (negative) end. (a) True (b) False
  21. 21.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
  22. 22.True or false: one tall, one short bar is the symbol for a voltmeter. (a) True (b) False
  23. 23.💡 5 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
  24. 24.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) junction (b) bulb (c) motor (d) cell
  25. 25.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) straight lines (c) wavy lines (d) dotted circles
  26. 26.🔍 Which is the odd one out? (a) a tube light (b) a school bell (c) a doorbell (d) a buzzer
  27. 27.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a plug top (c) a bulb (d) a long wire
  28. 28.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
  29. 29.🔍 Which is the odd one out? (a) a loudspeaker (b) a doorbell (c) a rice cooker (d) a buzzer
  30. 30.🔘 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 OFF and B is OFF. Does the bulb glow? (a) Yes (b) No
  31. 31.💡 3 identical bulbs are joined in parallel across a 4.5 V battery (ideal wires). How many volts does each bulb get? =
  32. 32.⚡ What does a buzzer mainly change electricity into? (a) movement (b) heat (c) light (d) sound
  33. 33.🔍 Which is the odd one out? (a) use small battery cells (b) use a cable with cuts (c) keep drinks far away (d) build with an adult near
  34. 34.🔘 A bulb and a cell are joined through 3 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
  35. 35.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
  36. 36.True or false: a water heater mainly makes sound. (a) True (b) False
  37. 37.⚠️ Is it safe to poke things in a socket? (a) not safe (b) safe
  38. 38.⚡ What do we call a flow of electric charge through a wire? (a) sound (b) a magnet (c) friction (d) electric current
  39. 39.🔌 Why are electric wires covered in plastic? (a) to make them heavy (b) plastic is an insulator (c) plastic makes current (d) plastic is a conductor
  40. 40.Which of these mainly makes sound? (a) a mixer grinder (b) an electric toy car (c) a loudspeaker (d) a torch

Answer key

  1. a siren
  2. False
  3. a conductor
  4. + (positive)
  5. 0
  6. safe
  7. 2
  8. − (negative)
  9. True
  10. not safe
  11. all wires are joined
  12. not safe
  13. each gets full voltage
  14. a short circuit
  15. conductors
  16. gives electricity
  17. + (positive)
  18. gives electricity
  19. a cotton thread
  20. False
  21. not safe
  22. False
  23. 1
  24. cell
  25. straight lines
  26. a tube light
  27. a fuse or MCB
  28. 1
  29. a rice cooker
  30. No
  31. 4.5
  32. sound
  33. use a cable with cuts
  34. 3
  35. safe
  36. False
  37. not safe
  38. electric current
  39. plastic is an insulator
  40. a loudspeaker

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