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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 273 · 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’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) goes back to its dock (d) explodes
  4. 4.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  5. 5.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a solar panel (c) a coin cell (d) a wind-up key
  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 is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 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%?
  18. 18.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  22. 22.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 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%?
  24. 24.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  25. 25.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  36. 36.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  37. 37.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 2
  2. 10
  3. goes back to its dock
  4. sunlight (solar panels)
  5. 50
  6. 4.5
  7. 40
  8. 20
  9. 2
  10. a power cable
  11. 4
  12. 6
  13. 12
  14. 3
  15. 3
  16. 1
  17. 5
  18. 6
  19. 2
  20. 3
  21. 8
  22. 9
  23. 4
  24. give it to an adult
  25. 5
  26. 5
  27. 300
  28. 3
  29. 100
  30. 4
  31. 1
  32. 100
  33. 10
  34. 50
  35. 1
  36. mAh
  37. 150
  38. 10
  39. 75
  40. 5

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