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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 20 · 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) °C (c) kg (d) mAh
  2. 2.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  3. 3.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) explodes (d) turns into a car
  5. 5.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a coin cell (d) a solar panel
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  10. 10.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) squeeze it flat (c) charge it again (d) throw it in a fire
  16. 16.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. mAh
  2. sunlight (solar panels)
  3. 80
  4. goes back to its dock
  5. 50
  6. a power cable
  7. 3
  8. 140
  9. a rechargeable battery
  10. 50
  11. 20
  12. 8
  13. 1
  14. 3
  15. give it to an adult
  16. 10
  17. 3
  18. 100
  19. 5
  20. 170
  21. 150
  22. 3
  23. 100
  24. 30
  25. 7.5
  26. 2
  27. 20
  28. 10
  29. 10
  30. 6
  31. 40
  32. 4
  33. 60
  34. 60
  35. 125
  36. 12
  37. 200
  38. 2
  39. 2
  40. 1

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