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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 290 · 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 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  4. 4.🔋 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%?
  5. 5.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 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%?
  11. 11.🔋 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%?
  12. 12.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery is at 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 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%?
  21. 21.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a water tank (d) a rechargeable battery
  24. 24.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  30. 30.🔋 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%?
  31. 31.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 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%?
  34. 34.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 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%?

Answer key

  1. 10
  2. 50
  3. 4
  4. 4
  5. 7.5
  6. 60
  7. 2
  8. 2
  9. 10
  10. 4
  11. 3
  12. 8
  13. 70
  14. 3
  15. 8
  16. 40
  17. 5
  18. 40
  19. 20
  20. 2
  21. 90
  22. 3
  23. a rechargeable battery
  24. 20
  25. 1
  26. 30
  27. 6
  28. 6
  29. give it to an adult
  30. 4
  31. 3
  32. 200
  33. 2
  34. 170
  35. 50
  36. 4.5
  37. 6
  38. 8
  39. 20
  40. 16

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