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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 184 · 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.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  2. 2.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  3. 3.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  5. 5.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a rechargeable battery (d) a candle
  7. 7.🔋 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%?
  8. 8.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult
  10. 10.🔋 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%?
  11. 11.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  18. 18.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  26. 26.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  29. 29.🔋 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
  30. 30.🔋 A robot’s battery is at 15% and charging adds 5% 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’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 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%?
  39. 39.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. goes back to its dock
  2. 6
  3. 100
  4. 7
  5. 12
  6. a rechargeable battery
  7. 3
  8. 3
  9. give it to an adult
  10. 3
  11. 50
  12. 150
  13. 50
  14. 90
  15. 7
  16. 1
  17. sunlight (solar panels)
  18. 4
  19. 2
  20. 5
  21. 1
  22. 1
  23. 30
  24. 250
  25. 4
  26. 80
  27. 6
  28. 4
  29. a power cable
  30. 170
  31. 40
  32. 6
  33. 40
  34. 16
  35. 150
  36. 12
  37. 7
  38. 2
  39. 20
  40. 5

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