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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 171 · 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 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
  2. 2.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery is at 75% 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’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) charge it again (d) squeeze it flat
  8. 8.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  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 is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 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%?
  17. 17.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  18. 18.🔋 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%?
  19. 19.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 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%?
  21. 21.🔋 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%?
  22. 22.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  38. 38.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. a power cable
  2. 10.5
  3. 10
  4. 5
  5. 1
  6. 40
  7. give it to an adult
  8. sunlight (solar panels)
  9. 80
  10. 2
  11. 5
  12. 50
  13. 2
  14. 7.5
  15. 60
  16. 3
  17. 10
  18. 4
  19. 30
  20. 2
  21. 2
  22. 20
  23. 3
  24. 30
  25. 4
  26. 3
  27. 2
  28. 5
  29. 200
  30. 75
  31. 10
  32. 16
  33. 8
  34. 6
  35. 100
  36. 1
  37. a rechargeable battery
  38. 17
  39. 9
  40. 2

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