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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 31 · 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 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) explodes (d) goes back to its dock
  8. 8.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  11. 11.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) kg (d) km
  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’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  21. 21.🔋 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%?
  22. 22.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  24. 24.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 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%?
  26. 26.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) petrol pumps (d) shop batteries
  28. 28.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a solar panel (d) a wind-up key
  33. 33.🔋 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%?
  34. 34.🔋 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%?
  35. 35.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet

Answer key

  1. 3
  2. 12
  3. 6
  4. 4.5
  5. 60
  6. 125
  7. goes back to its dock
  8. 12
  9. 8
  10. 2
  11. 100
  12. 150
  13. 9
  14. mAh
  15. 6
  16. 6
  17. 30
  18. 10
  19. 3
  20. 8
  21. 4
  22. 4
  23. 4
  24. 100
  25. 2
  26. 75
  27. sunlight (solar panels)
  28. 5
  29. 180
  30. 80
  31. 6
  32. a power cable
  33. 4
  34. 4
  35. 10
  36. 7.5
  37. 20
  38. 24
  39. 200
  40. a rechargeable battery

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