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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 217 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  2. 2.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 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
  7. 7.🔋 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%?
  8. 8.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  9. 9.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  12. 12.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery holds 2000 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’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  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 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  26. 26.🔋 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%?
  27. 27.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) charge it again (d) give it to an adult
  29. 29.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  32. 32.🔋 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%?
  33. 33.🔋 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%?
  34. 34.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. mAh
  2. 20
  3. 9
  4. 80
  5. 3
  6. a power cable
  7. 4
  8. a rechargeable battery
  9. 10.5
  10. 40
  11. goes back to its dock
  12. 75
  13. 4
  14. 2
  15. 5
  16. 1
  17. 60
  18. 8
  19. 6
  20. 4.5
  21. 2
  22. 17
  23. 12
  24. 200
  25. 8
  26. 4
  27. 20
  28. give it to an adult
  29. 1
  30. 70
  31. 4
  32. 3
  33. 2
  34. 30
  35. 10
  36. 2
  37. 4
  38. 5
  39. 2
  40. 150

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