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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 556 · 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.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) sunlight (solar panels) (c) wind-up keys (d) shop batteries
  2. 2.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet
  3. 3.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  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 runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) keeps going for ever (d) turns into a car
  16. 16.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  21. 21.🔋 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%?
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  26. 26.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  27. 27.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 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%?
  33. 33.🔋 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%?
  34. 34.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?

Answer key

  1. sunlight (solar panels)
  2. a rechargeable battery
  3. 50
  4. 50
  5. 6
  6. 2
  7. 5
  8. 4.5
  9. 7.5
  10. 3
  11. 10
  12. 6
  13. 4
  14. 10.5
  15. goes back to its dock
  16. 1
  17. 20
  18. 150
  19. 2
  20. mAh
  21. 6
  22. 3
  23. 2
  24. 20
  25. 4
  26. a power cable
  27. 30
  28. 100
  29. 80
  30. 50
  31. 9
  32. 3
  33. 2
  34. 3
  35. 20
  36. 10
  37. 8
  38. 7
  39. 125
  40. 7

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