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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 110 · 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 uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) turns into a car (d) keeps going for ever
  10. 10.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a tiny magnet (d) a rechargeable battery
  11. 11.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  12. 12.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  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 runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) sunlight (solar panels) (d) shop batteries
  26. 26.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 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%?
  34. 34.🔋 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%?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 120
  2. 9
  3. 12
  4. 150
  5. 12
  6. 300
  7. 150
  8. 100
  9. goes back to its dock
  10. a rechargeable battery
  11. 2
  12. 4.5
  13. 5
  14. 15
  15. 7.5
  16. 20
  17. 125
  18. 200
  19. mAh
  20. 3
  21. 10.5
  22. 5
  23. 2
  24. 3
  25. sunlight (solar panels)
  26. 170
  27. 6
  28. 20
  29. 24
  30. 6
  31. 3
  32. 20
  33. 7
  34. 2
  35. 4
  36. 6
  37. 50
  38. 4
  39. 50
  40. 3

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