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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 344 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) km (d) °C
  2. 2.🔋 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%?
  3. 3.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  4. 4.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 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%?
  12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) give it to an adult (d) charge it again
  13. 13.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  15. 15.🔋 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
  16. 16.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  18. 18.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  19. 19.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  26. 26.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a candle (d) a tiny magnet
  36. 36.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?

Answer key

  1. mAh
  2. 3
  3. 7
  4. 100
  5. 12
  6. 25
  7. 5
  8. 20
  9. 70
  10. 190
  11. 2
  12. give it to an adult
  13. 150
  14. 50
  15. goes back to its dock
  16. 15
  17. sunlight (solar panels)
  18. 3
  19. 7.5
  20. 60
  21. 120
  22. 10
  23. 4.5
  24. 1
  25. 8
  26. 10
  27. 20
  28. 100
  29. 1
  30. 50
  31. 3
  32. 40
  33. 20
  34. 12
  35. a rechargeable battery
  36. 4
  37. 7
  38. 6
  39. 10.5
  40. 10

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