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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 148 · 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 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  3. 3.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  6. 6.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) throw it in a fire (d) give it to an adult
  8. 8.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) explodes (c) goes back to its dock (d) turns into a car
  13. 13.🔋 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%?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  16. 16.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  20. 20.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a candle (d) a tiny magnet
  21. 21.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 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%?
  26. 26.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) °C (d) km
  27. 27.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 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%?
  32. 32.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a solar panel (d) a coin cell
  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 is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 30
  2. 4
  3. 8
  4. 60
  5. 3
  6. 7.5
  7. give it to an adult
  8. 40
  9. 6
  10. 3
  11. 40
  12. goes back to its dock
  13. 3
  14. 3
  15. 3
  16. 10.5
  17. 50
  18. 9
  19. 6
  20. a rechargeable battery
  21. 150
  22. 2
  23. 4
  24. 7
  25. 3
  26. mAh
  27. 8
  28. 12
  29. 9
  30. 5
  31. 4
  32. 60
  33. 3
  34. 20
  35. 3
  36. a power cable
  37. 10
  38. 190
  39. 100
  40. 20

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