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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 500 · 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 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  3. 3.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  5. 5.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  7. 7.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  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 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a rechargeable battery (d) a water tank
  17. 17.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) explodes (d) goes back to its dock
  18. 18.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) squeeze it flat (d) charge it again
  23. 23.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery is at 100%. 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 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  36. 36.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 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%?

Answer key

  1. 90
  2. sunlight (solar panels)
  3. 2
  4. 2
  5. 20
  6. 8
  7. 4.5
  8. 40
  9. 180
  10. 100
  11. 3
  12. 18
  13. 50
  14. 15
  15. 9
  16. a rechargeable battery
  17. goes back to its dock
  18. 4
  19. 2
  20. 20
  21. 125
  22. give it to an adult
  23. 30
  24. 10.5
  25. 5
  26. 40
  27. 7.5
  28. 20
  29. 75
  30. 120
  31. 1
  32. 250
  33. 20
  34. 17
  35. 5
  36. 6
  37. 40
  38. 100
  39. 10
  40. 3

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