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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 245 · 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 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  4. 4.🔋 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%?
  5. 5.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) explodes (d) turns into a car
  6. 6.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  9. 9.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  10. 10.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery is at 75% and charging adds 25% 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.🔋 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%?
  15. 15.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  16. 16.🔋 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%?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 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 runs on 4 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) km (b) mAh (c) kg (d) °C
  27. 27.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  28. 28.🔋 A robot’s battery is at 80%. 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 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  38. 38.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  39. 39.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 12
  2. 100
  3. 7
  4. 2
  5. goes back to its dock
  6. 4
  7. 90
  8. 4
  9. a rechargeable battery
  10. 7.5
  11. 50
  12. 10
  13. 9
  14. 3
  15. 6
  16. 4
  17. 3
  18. 8
  19. 150
  20. 200
  21. 20
  22. 3
  23. 3
  24. 25
  25. 6
  26. mAh
  27. a power cable
  28. 16
  29. 30
  30. 1
  31. 3
  32. 110
  33. 120
  34. 50
  35. 6
  36. 10
  37. 2
  38. sunlight (solar panels)
  39. 40
  40. 2

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