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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 723 · 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 holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  2. 2.🔋 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%?
  3. 3.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) kg (d) mAh
  4. 4.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a coin cell (d) a power cable
  5. 5.🔋 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%?
  6. 6.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  7. 7.🔋 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%?
  8. 8.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 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%?
  10. 10.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet
  12. 12.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  19. 19.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  24. 24.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  26. 26.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  31. 31.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  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 is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 2
  2. 2
  3. mAh
  4. a power cable
  5. 3
  6. 2
  7. 2
  8. 9
  9. 3
  10. 20
  11. a rechargeable battery
  12. 24
  13. 4
  14. 200
  15. 7
  16. 100
  17. 14
  18. 15
  19. 4.5
  20. 6
  21. 3
  22. 6
  23. 3
  24. 25
  25. 6
  26. 3
  27. 9
  28. 7
  29. 3
  30. sunlight (solar panels)
  31. 40
  32. 200
  33. 50
  34. 30
  35. 20
  36. 4
  37. 40
  38. 10
  39. 6
  40. 150

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