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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 597 · 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 runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 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%?
  3. 3.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  5. 5.🔋 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%?
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  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’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  16. 16.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  18. 18.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 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
  31. 31.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 7.5
  2. 2
  3. 140
  4. a rechargeable battery
  5. 4
  6. 6
  7. 170
  8. 10
  9. 1
  10. 40
  11. 10
  12. 30
  13. 5
  14. 160
  15. 6
  16. 12
  17. sunlight (solar panels)
  18. 4
  19. 10
  20. 200
  21. 50
  22. 20
  23. 14
  24. 1
  25. 2
  26. 5
  27. 10.5
  28. 40
  29. 8
  30. goes back to its dock
  31. 20
  32. 3
  33. 1
  34. 250
  35. 20
  36. 4
  37. 4
  38. 50
  39. 150
  40. 3

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