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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 629 · 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 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  6. 6.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 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
  12. 12.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 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%?
  14. 14.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a tiny magnet (d) a candle
  16. 16.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a solar panel (d) a coin cell
  18. 18.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 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%?
  21. 21.🔋 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%?
  22. 22.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  25. 25.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 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%?
  35. 35.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 30
  2. 90
  3. 10
  4. goes back to its dock
  5. mAh
  6. 25
  7. 4
  8. 1
  9. 75
  10. 3
  11. give it to an adult
  12. 40
  13. 10
  14. 12
  15. a rechargeable battery
  16. 10.5
  17. a power cable
  18. 4.5
  19. 20
  20. 12
  21. 2
  22. 300
  23. 9
  24. sunlight (solar panels)
  25. 10
  26. 6
  27. 120
  28. 10
  29. 14
  30. 13
  31. 6
  32. 4
  33. 160
  34. 5
  35. 5
  36. 4
  37. 3
  38. 110
  39. 3
  40. 7

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