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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 324 · 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 runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 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%?
  5. 5.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  10. 10.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) explodes (d) keeps going for ever
  11. 11.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  19. 19.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  20. 20.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  22. 22.🔋 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%?
  23. 23.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 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%?
  30. 30.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  31. 31.🔋 A robot’s battery is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  39. 39.🔋 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%?
  40. 40.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 7.5
  2. 8
  3. 40
  4. 5
  5. 6
  6. 130
  7. 100
  8. 4
  9. 20
  10. goes back to its dock
  11. 9
  12. 18
  13. 3
  14. 24
  15. 1
  16. 60
  17. 8
  18. 7
  19. sunlight (solar panels)
  20. 3
  21. 25
  22. 7
  23. 150
  24. 4
  25. 90
  26. 20
  27. 10
  28. 15
  29. 16
  30. a power cable
  31. 11
  32. 2
  33. 3
  34. 120
  35. 20
  36. 100
  37. 2
  38. a rechargeable battery
  39. 4
  40. 12

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