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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 49 · 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 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
  2. 2.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) keeps going for ever (d) goes back to its dock
  4. 4.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  7. 7.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 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%?
  12. 12.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  13. 13.🔋 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%?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) petrol pumps (d) shop batteries
  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’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 60% 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) km (b) °C (c) mAh (d) kg
  20. 20.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 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%?
  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.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  27. 27.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. give it to an adult
  2. 100
  3. goes back to its dock
  4. 70
  5. 4.5
  6. a rechargeable battery
  7. 20
  8. 300
  9. 9
  10. 10
  11. 4
  12. 5
  13. 2
  14. sunlight (solar panels)
  15. 7.5
  16. 1
  17. 10
  18. 80
  19. mAh
  20. 120
  21. 4
  22. 6
  23. 5
  24. 3
  25. 60
  26. 7
  27. 200
  28. 10
  29. 40
  30. 12
  31. 5
  32. 1
  33. 20
  34. 20
  35. 8
  36. 2
  37. 190
  38. 8
  39. 9
  40. 8

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