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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 639 · 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 uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 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%?
  3. 3.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  4. 4.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a candle (d) a tiny magnet
  5. 5.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) km (d) °C
  12. 12.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  20. 20.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) explodes (d) goes back to its dock
  21. 21.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. 250
  2. 3
  3. a power cable
  4. a rechargeable battery
  5. 80
  6. 10
  7. 190
  8. 1
  9. 2
  10. 50
  11. mAh
  12. 3
  13. 7
  14. 20
  15. 3
  16. 60
  17. 200
  18. 50
  19. sunlight (solar panels)
  20. goes back to its dock
  21. 180
  22. 60
  23. 30
  24. 20
  25. 40
  26. 7
  27. 2
  28. 60
  29. 10
  30. 6
  31. 6
  32. 2
  33. 4.5
  34. 3
  35. 8
  36. 4
  37. 4
  38. 50
  39. 1
  40. 2

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