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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 624 · 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.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  4. 4.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  5. 5.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  11. 11.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  14. 14.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 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%?
  19. 19.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  21. 21.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  31. 31.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery is at 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult

Answer key

  1. 100
  2. a rechargeable battery
  3. goes back to its dock
  4. 1
  5. 10
  6. 75
  7. 4
  8. 3
  9. 150
  10. 4
  11. 7.5
  12. 50
  13. 2
  14. 3
  15. 30
  16. 12
  17. 6
  18. 4
  19. 50
  20. a power cable
  21. 50
  22. 80
  23. 20
  24. 5
  25. 80
  26. 5
  27. 13
  28. 10.5
  29. 20
  30. sunlight (solar panels)
  31. 1
  32. 140
  33. 10
  34. 2
  35. 3
  36. 30
  37. 10
  38. 120
  39. 25
  40. give it to an adult

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