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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 869 · 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 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  3. 3.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  6. 6.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 200 mAh and the robot uses 200 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 uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 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%?
  11. 11.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  14. 14.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 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
  20. 20.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  21. 21.🔋 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%?
  22. 22.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  23. 23.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  27. 27.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a candle (d) a rechargeable battery
  32. 32.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 9
  2. a power cable
  3. 8
  4. 7
  5. 8
  6. 200
  7. 1
  8. 250
  9. 40
  10. 2
  11. 10
  12. 40
  13. sunlight (solar panels)
  14. 6
  15. 7
  16. 8
  17. 3
  18. 4.5
  19. goes back to its dock
  20. 8
  21. 2
  22. 5
  23. 100
  24. 50
  25. 10.5
  26. mAh
  27. 125
  28. 19
  29. 7.5
  30. 20
  31. a rechargeable battery
  32. 10
  33. 20
  34. 2
  35. 17
  36. 2
  37. 7
  38. 10
  39. 100
  40. 6

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