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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 633 · 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 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) charge it again (d) throw it in a fire
  4. 4.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  7. 7.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 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%?
  12. 12.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a tiny magnet (d) a water tank
  13. 13.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 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%?
  16. 16.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 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%?
  21. 21.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) km (d) mAh
  24. 24.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 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%?
  27. 27.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 10
  2. 4.5
  3. give it to an adult
  4. 20
  5. 20
  6. 6
  7. 6
  8. 10
  9. 25
  10. 60
  11. 4
  12. a rechargeable battery
  13. 60
  14. 150
  15. 3
  16. 4
  17. 1
  18. 40
  19. 8
  20. 10
  21. 75
  22. 8
  23. mAh
  24. 5
  25. 7.5
  26. 3
  27. 50
  28. 30
  29. 80
  30. 20
  31. 10
  32. 100
  33. 3
  34. 2
  35. 1
  36. 6
  37. 20
  38. 3
  39. 120
  40. 5

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