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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 571 · 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 runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  3. 3.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 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%?
  5. 5.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a rechargeable battery (d) a water tank
  11. 11.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) °C (d) km
  20. 20.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 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%?
  22. 22.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  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 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  40. 40.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?

Answer key

  1. 12
  2. give it to an adult
  3. 10
  4. 4
  5. 10
  6. 40
  7. 6
  8. 40
  9. 1
  10. a rechargeable battery
  11. 10.5
  12. 100
  13. 40
  14. 5
  15. 5
  16. 4
  17. 40
  18. 180
  19. mAh
  20. 40
  21. 2
  22. 4.5
  23. 3
  24. 6
  25. 2
  26. 150
  27. 7.5
  28. 30
  29. 2
  30. 30
  31. 3
  32. 2
  33. 7
  34. 1
  35. 20
  36. 3
  37. 6
  38. 60
  39. a power cable
  40. 5

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