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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 742 · 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 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  7. 7.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) km (d) °C
  13. 13.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  14. 14.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) charge it again (d) throw it in a fire
  18. 18.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  21. 21.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) goes back to its dock (d) keeps going for ever
  29. 29.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) wind-up keys (d) petrol pumps
  30. 30.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  32. 32.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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 uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  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 wind-up key (d) a power cable
  40. 40.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?

Answer key

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

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