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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 875 · 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 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  4. 4.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet
  5. 5.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult
  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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  12. 12.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 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%?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a solar panel (d) a wind-up key
  20. 20.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) kg (d) °C
  24. 24.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) sunlight (solar panels) (d) shop batteries
  27. 27.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  28. 28.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 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%?
  35. 35.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?

Answer key

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

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