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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 354 · 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 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) explodes (d) goes back to its dock
  5. 5.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  6. 6.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 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%?
  11. 11.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  20. 20.🔋 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%?
  21. 21.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) km (d) mAh
  29. 29.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  33. 33.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 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%?
  35. 35.🔋 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%?
  36. 36.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  38. 38.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult

Answer key

  1. 70
  2. 300
  3. 8
  4. goes back to its dock
  5. 4
  6. 3
  7. 10.5
  8. 10
  9. 6
  10. 2
  11. 125
  12. 150
  13. 5
  14. 2
  15. 4
  16. 2
  17. 2
  18. 80
  19. a rechargeable battery
  20. 3
  21. 20
  22. 100
  23. 3
  24. 7.5
  25. 40
  26. 5
  27. 90
  28. mAh
  29. 20
  30. 60
  31. 6
  32. 3
  33. 12
  34. 8
  35. 4
  36. 150
  37. sunlight (solar panels)
  38. 4.5
  39. 6
  40. give it to an adult

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