← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 240 · 40 questions
TalentJR

Robot tip (Holds ÷ uses): Hours = capacity in mAh ÷ current in mA (2000 mAh ÷ 500 mA = 4 hours). Percent: blocks = 100% ÷ % used per block; time = blocks × minutes per block. Cells in series add up: 4 cells of 1.5 V give 6 V.

NameDateTime takenScore ___ / 40
  1. 1.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) give it to an adult (d) squeeze it flat
  2. 2.🔋 A robot’s battery is at 100%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  6. 6.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a solar panel (d) a coin cell
  12. 12.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  15. 15.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  16. 16.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  19. 19.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) shop batteries (d) petrol pumps
  20. 20.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  21. 21.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. give it to an adult
  2. 4
  3. 5
  4. 190
  5. mAh
  6. 12
  7. 5
  8. 10
  9. 2
  10. 7.5
  11. a power cable
  12. 30
  13. 60
  14. 14
  15. goes back to its dock
  16. 3
  17. 6
  18. 7
  19. sunlight (solar panels)
  20. a rechargeable battery
  21. 25
  22. 170
  23. 2
  24. 2
  25. 125
  26. 30
  27. 20
  28. 75
  29. 10
  30. 4
  31. 8
  32. 50
  33. 4
  34. 4.5
  35. 9
  36. 8
  37. 3
  38. 20
  39. 3
  40. 70

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