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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 401 · 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 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  2. 2.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) kg (d) °C
  3. 3.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  9. 9.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  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 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 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%?
  13. 13.🔋 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%?
  14. 14.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  16. 16.🔋 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%?
  17. 17.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a tiny magnet (d) a rechargeable battery
  23. 23.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 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%?
  26. 26.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  27. 27.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) keeps going for ever (d) goes back to its dock
  28. 28.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot’s battery is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  33. 33.🔋 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%?
  34. 34.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. 3
  2. mAh
  3. 12
  4. 60
  5. 50
  6. 9
  7. 20
  8. sunlight (solar panels)
  9. a power cable
  10. 2
  11. 100
  12. 3
  13. 3
  14. 20
  15. 10
  16. 3
  17. 7.5
  18. 30
  19. 25
  20. 3
  21. 80
  22. a rechargeable battery
  23. 40
  24. 4.5
  25. 4
  26. 20
  27. goes back to its dock
  28. 75
  29. 6
  30. 5
  31. 11
  32. 3
  33. 3
  34. 5
  35. 18
  36. 5
  37. 7
  38. 80
  39. 5
  40. 9

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