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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 218 · 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.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  2. 2.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) km (d) kg
  3. 3.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  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 does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) turns into a car (d) explodes
  7. 7.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 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%?
  16. 16.🔋 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%?
  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 holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  21. 21.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 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%?
  23. 23.🔋 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%?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) throw it in a fire (d) charge it again
  38. 38.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  39. 39.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. sunlight (solar panels)
  2. mAh
  3. 12
  4. 5
  5. 4.5
  6. goes back to its dock
  7. 150
  8. 6
  9. 10
  10. 6
  11. 2
  12. 6
  13. 8
  14. 50
  15. 4
  16. 2
  17. 2
  18. 8
  19. 5
  20. 16
  21. 12
  22. 4
  23. 9
  24. 10
  25. 30
  26. 7
  27. 1
  28. 10.5
  29. 4
  30. 3
  31. 5
  32. 5
  33. 6
  34. 8
  35. 5
  36. 20
  37. give it to an adult
  38. a rechargeable battery
  39. 24
  40. 190

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