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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 523 · 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 powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  2. 2.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  5. 5.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) turns into a car (d) explodes
  7. 7.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) squeeze it flat (d) throw it in a fire
  9. 9.🔋 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%?
  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 runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 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%?
  15. 15.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  17. 17.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  23. 23.🔋 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%?
  24. 24.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 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%?
  34. 34.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. a rechargeable battery
  2. 10.5
  3. 12
  4. mAh
  5. 30
  6. goes back to its dock
  7. 30
  8. give it to an adult
  9. 3
  10. 3
  11. 4.5
  12. 1
  13. 5
  14. 2
  15. 30
  16. a power cable
  17. 12
  18. 50
  19. 6
  20. 9
  21. 4
  22. 8
  23. 4
  24. 25
  25. 3
  26. 12
  27. 40
  28. 8
  29. 30
  30. 24
  31. 2
  32. 60
  33. 2
  34. 20
  35. 8
  36. 170
  37. 4
  38. 120
  39. 1
  40. 100

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