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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 220 · 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 uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  5. 5.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  6. 6.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 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%?
  11. 11.🔋 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%?
  12. 12.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) kg (d) °C
  18. 18.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) keeps going for ever (d) explodes
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 20% and charging adds 5% 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 uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a solar panel (c) a wind-up key (d) a coin cell
  35. 35.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 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%?
  38. 38.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) charge it again (d) give it to an adult
  40. 40.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 10
  2. 180
  3. 3
  4. a rechargeable battery
  5. sunlight (solar panels)
  6. 90
  7. 3
  8. 5
  9. 8
  10. 2
  11. 2
  12. 7.5
  13. 40
  14. 8
  15. 2
  16. 20
  17. mAh
  18. goes back to its dock
  19. 5
  20. 3
  21. 1
  22. 60
  23. 100
  24. 12
  25. 40
  26. 4.5
  27. 7
  28. 6
  29. 130
  30. 160
  31. 2
  32. 150
  33. 12
  34. a power cable
  35. 16
  36. 40
  37. 3
  38. 250
  39. give it to an adult
  40. 9

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