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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 95 · 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 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  3. 3.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  7. 7.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) km (d) kg
  12. 12.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  19. 19.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a power cable (d) a solar panel
  24. 24.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  25. 25.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a tiny magnet (d) a candle
  26. 26.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  30. 30.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  32. 32.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 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%?
  39. 39.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 8
  2. 2
  3. 7.5
  4. 20
  5. 10
  6. 2
  7. 100
  8. 80
  9. 8
  10. 50
  11. mAh
  12. 40
  13. 90
  14. 2
  15. 2
  16. 3
  17. 3
  18. 6
  19. 6
  20. 30
  21. 15
  22. 40
  23. a power cable
  24. 2
  25. a rechargeable battery
  26. 130
  27. 3
  28. 100
  29. goes back to its dock
  30. 50
  31. give it to an adult
  32. 9
  33. 200
  34. 4
  35. 2
  36. 80
  37. 20
  38. 3
  39. 30
  40. 30

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