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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 453 · 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 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
  3. 3.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  4. 4.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  7. 7.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  10. 10.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  11. 11.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) km (d) °C
  13. 13.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  28. 28.🔋 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%?
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 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%?
  39. 39.🔋 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%?
  40. 40.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 5
  2. a rechargeable battery
  3. 1
  4. 12
  5. 80
  6. 3
  7. 7.5
  8. 2
  9. 1
  10. goes back to its dock
  11. 9
  12. mAh
  13. 3
  14. sunlight (solar panels)
  15. 3
  16. 2
  17. 180
  18. 80
  19. 4
  20. 100
  21. 4
  22. 100
  23. 70
  24. 5
  25. 4
  26. 6
  27. 2
  28. 4
  29. 8
  30. 10
  31. 40
  32. 4.5
  33. 10
  34. 30
  35. 300
  36. 10
  37. 4
  38. 3
  39. 2
  40. 10.5

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