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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 235 · 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’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 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%?
  3. 3.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) °C (d) kg
  4. 4.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 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%?
  10. 10.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  13. 13.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) wind-up keys (c) petrol pumps (d) sunlight (solar panels)
  15. 15.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  20. 20.🔋 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%?
  21. 21.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot uses 10% of its battery every 1 minute. 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 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) keeps going for ever (d) turns into a car
  30. 30.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 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
  38. 38.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a rechargeable battery (d) a candle
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 10
  2. 4
  3. mAh
  4. 150
  5. 7.5
  6. 180
  7. 2
  8. 4.5
  9. 2
  10. 30
  11. 20
  12. a power cable
  13. 10
  14. sunlight (solar panels)
  15. 5
  16. 10
  17. 20
  18. 6
  19. 20
  20. 2
  21. 40
  22. 3
  23. 9
  24. 10
  25. 8
  26. 40
  27. 50
  28. 30
  29. goes back to its dock
  30. 1
  31. 7
  32. 2
  33. 4
  34. 6
  35. 3
  36. 60
  37. give it to an adult
  38. a rechargeable battery
  39. 4
  40. 30

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