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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 98 · 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 candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  2. 2.🔋 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%?
  3. 3.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  7. 7.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  8. 8.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) give it to an adult (d) charge it again
  9. 9.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) wind-up keys (d) sunlight (solar panels)
  10. 10.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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 uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) keeps going for ever (d) goes back to its dock
  22. 22.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 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%?
  38. 38.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. a rechargeable battery
  2. 12
  3. 3
  4. 8
  5. 2
  6. 4
  7. a power cable
  8. give it to an adult
  9. sunlight (solar panels)
  10. 25
  11. 170
  12. 40
  13. 5
  14. 80
  15. 12
  16. 5
  17. 4.5
  18. 20
  19. 160
  20. 16
  21. goes back to its dock
  22. 6
  23. 25
  24. 20
  25. 5
  26. 100
  27. 20
  28. 7
  29. 1
  30. 3
  31. 4
  32. 8
  33. 20
  34. 40
  35. 80
  36. 130
  37. 9
  38. 8
  39. 4
  40. 8

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