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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 546 · 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 uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 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%?
  3. 3.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  5. 5.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  6. 6.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  11. 11.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) explodes (d) goes back to its dock
  15. 15.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 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%?
  23. 23.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 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%?
  25. 25.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) km (d) °C
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  29. 29.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a wind-up key (d) a power cable
  38. 38.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 100
  2. 4
  3. 8
  4. 3
  5. a rechargeable battery
  6. 20
  7. 4.5
  8. 3
  9. 20
  10. 5
  11. 9
  12. 7.5
  13. 3
  14. goes back to its dock
  15. 4
  16. 50
  17. 10
  18. 190
  19. 25
  20. 90
  21. 15
  22. 2
  23. 8
  24. 3
  25. mAh
  26. 2
  27. 17
  28. give it to an adult
  29. 7
  30. 3
  31. 4
  32. 30
  33. 100
  34. 10
  35. 3
  36. 40
  37. a power cable
  38. 60
  39. 1
  40. 250

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