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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 271 · 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 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) give it to an adult (d) charge it again
  6. 6.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 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%?
  13. 13.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 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%?
  18. 18.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  19. 19.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a tiny magnet (d) a candle
  31. 31.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  32. 32.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) kg (d) mAh
  33. 33.🔋 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%?
  34. 34.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  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 is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 20
  2. 4
  3. 90
  4. 10.5
  5. give it to an adult
  6. 8
  7. 3
  8. 13
  9. 1
  10. 9
  11. 50
  12. 2
  13. 150
  14. 4
  15. 20
  16. 6
  17. 5
  18. goes back to its dock
  19. 2
  20. 2
  21. 125
  22. 7.5
  23. 40
  24. 1
  25. 9
  26. 100
  27. 40
  28. 10
  29. 8
  30. a rechargeable battery
  31. 25
  32. mAh
  33. 8
  34. 250
  35. 4
  36. 4.5
  37. 40
  38. 3
  39. 5
  40. 50

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