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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 339 · 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 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  12. 12.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  13. 13.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  15. 15.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) petrol pumps (d) shop batteries
  16. 16.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  18. 18.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  19. 19.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  21. 21.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  24. 24.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a solar panel (c) a coin cell (d) a wind-up key
  26. 26.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) squeeze it flat (d) throw it in a fire
  33. 33.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 40
  2. 10.5
  3. 40
  4. 200
  5. 20
  6. 80
  7. 7
  8. 2
  9. 30
  10. 12
  11. 1
  12. a rechargeable battery
  13. 8
  14. 3
  15. sunlight (solar panels)
  16. 8
  17. 7
  18. mAh
  19. 9
  20. 6
  21. 7.5
  22. 1
  23. 3
  24. 100
  25. a power cable
  26. 2
  27. 1
  28. 6
  29. 4
  30. 6
  31. 10
  32. give it to an adult
  33. 50
  34. 75
  35. 1
  36. 6
  37. 10
  38. 5
  39. 100
  40. 20

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