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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 5 · 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) °C (b) km (c) mAh (d) kg
  2. 2.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  3. 3.🔋 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%?
  4. 4.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  5. 5.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) keeps going for ever (d) explodes
  6. 6.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  7. 7.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot runs on 8 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.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  13. 13.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  15. 15.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 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%?
  18. 18.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  20. 20.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 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%?
  22. 22.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  23. 23.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 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
  28. 28.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  38. 38.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 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%?

Answer key

  1. mAh
  2. 6
  3. 3
  4. 20
  5. goes back to its dock
  6. 6
  7. 150
  8. 170
  9. 12
  10. 40
  11. 60
  12. 8
  13. 3
  14. 7
  15. 4.5
  16. 9
  17. 3
  18. 100
  19. a rechargeable battery
  20. 160
  21. 4
  22. a power cable
  23. 2
  24. 300
  25. 40
  26. 7.5
  27. give it to an adult
  28. 6
  29. 40
  30. 5
  31. 8
  32. 2
  33. 7
  34. 7
  35. 50
  36. 10.5
  37. 7
  38. 100
  39. 200
  40. 2

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