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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 411 · 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 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 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%?
  7. 7.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) shop batteries (d) petrol pumps
  12. 12.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  13. 13.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  14. 14.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 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%?
  17. 17.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 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%?
  20. 20.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a solar panel (d) a wind-up key
  22. 22.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?

Answer key

  1. 10
  2. 100
  3. 7.5
  4. 6
  5. 15
  6. 3
  7. 200
  8. 4
  9. 3
  10. 9
  11. sunlight (solar panels)
  12. 20
  13. goes back to its dock
  14. 7
  15. 8
  16. 2
  17. 100
  18. 30
  19. 2
  20. 5
  21. a power cable
  22. 2
  23. 1
  24. 30
  25. 4
  26. 170
  27. 9
  28. 8
  29. 40
  30. 2
  31. 3
  32. 110
  33. 150
  34. 6
  35. 90
  36. 150
  37. 25
  38. 8
  39. 2
  40. 3

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