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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 226 · 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.🔋 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
  2. 2.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) keeps going for ever (d) goes back to its dock
  5. 5.🔋 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%?
  6. 6.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  12. 12.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  19. 19.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  21. 21.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a candle (d) a water tank
  23. 23.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  24. 24.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  35. 35.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  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’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. give it to an adult
  2. 40
  3. 25
  4. goes back to its dock
  5. 4
  6. 20
  7. 2
  8. 6
  9. 150
  10. 20
  11. 8
  12. 3
  13. 1
  14. 20
  15. 3
  16. 6
  17. 30
  18. 7
  19. 4.5
  20. 19
  21. 14
  22. a rechargeable battery
  23. a power cable
  24. 5
  25. 2
  26. 1
  27. 2
  28. 2
  29. 1
  30. 3
  31. 8
  32. 10
  33. 7.5
  34. mAh
  35. 60
  36. 10
  37. 170
  38. 5
  39. 100
  40. 50

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