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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 564 · 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 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  6. 6.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) keeps going for ever (d) explodes
  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 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  15. 15.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  18. 18.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) squeeze it flat (d) charge it again
  29. 29.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  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’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 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%?
  39. 39.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 180
  2. 50
  3. 3
  4. 80
  5. 5
  6. 7.5
  7. 4
  8. 250
  9. 5
  10. 170
  11. 4.5
  12. goes back to its dock
  13. 60
  14. 2
  15. sunlight (solar panels)
  16. a power cable
  17. mAh
  18. 12
  19. 2
  20. 30
  21. 6
  22. 3
  23. 4
  24. 10
  25. 7
  26. 60
  27. 70
  28. give it to an adult
  29. 10.5
  30. 4
  31. 3
  32. 8
  33. 8
  34. 2
  35. 9
  36. 30
  37. 75
  38. 9
  39. 12
  40. 4

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