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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 12 · 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.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a solar panel (d) a wind-up key
  3. 3.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) give it to an adult (d) charge it again
  5. 5.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) keeps going for ever (c) explodes (d) turns into a car
  6. 6.🔋 A robot’s battery is at 100%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  21. 21.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  30. 30.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. a rechargeable battery
  2. a power cable
  3. 180
  4. give it to an adult
  5. goes back to its dock
  6. 4
  7. 6
  8. 12
  9. 2
  10. 6
  11. 4
  12. 7
  13. 2
  14. 3
  15. 2
  16. 20
  17. 1
  18. 8
  19. 20
  20. sunlight (solar panels)
  21. 7
  22. 100
  23. 80
  24. 30
  25. 30
  26. 1
  27. 7
  28. 25
  29. mAh
  30. 25
  31. 40
  32. 6
  33. 10
  34. 40
  35. 150
  36. 10.5
  37. 30
  38. 4
  39. 30
  40. 8

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