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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 730 · 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 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a power cable (d) a coin cell
  4. 4.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) sunlight (solar panels) (c) wind-up keys (d) shop batteries
  5. 5.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) give it to an adult (d) throw it in a fire
  10. 10.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  12. 12.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a rechargeable battery (d) a candle
  16. 16.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  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 uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 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
  27. 27.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 40
  2. 150
  3. a power cable
  4. sunlight (solar panels)
  5. 30
  6. 80
  7. 20
  8. 4.5
  9. give it to an adult
  10. 10
  11. mAh
  12. 250
  13. 100
  14. 60
  15. a rechargeable battery
  16. 24
  17. 6
  18. 40
  19. 7.5
  20. 40
  21. 10.5
  22. 2
  23. 7
  24. 30
  25. 20
  26. goes back to its dock
  27. 3
  28. 5
  29. 5
  30. 10
  31. 2
  32. 7
  33. 20
  34. 75
  35. 60
  36. 8
  37. 190
  38. 30
  39. 4
  40. 50

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