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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 718 · 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 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 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%?
  6. 6.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  9. 9.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  10. 10.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) give it to an adult (d) charge it again
  16. 16.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  21. 21.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  28. 28.🔋 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%?
  29. 29.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  32. 32.🔋 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%?
  33. 33.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) wind-up keys (d) petrol pumps
  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’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 200
  2. 12
  3. 100
  4. 10.5
  5. 8
  6. 10
  7. 2
  8. 6
  9. mAh
  10. 130
  11. 50
  12. 4
  13. 3
  14. 6
  15. give it to an adult
  16. 7
  17. 80
  18. 3
  19. 50
  20. 13
  21. 125
  22. 75
  23. 2
  24. 2
  25. 10
  26. 40
  27. goes back to its dock
  28. 4
  29. 4
  30. 40
  31. a rechargeable battery
  32. 9
  33. sunlight (solar panels)
  34. 20
  35. 20
  36. 7
  37. 5
  38. 6
  39. 80
  40. 6

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