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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 771 · 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 is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) petrol pumps (d) wind-up keys
  3. 3.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  4. 4.🔋 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%?
  5. 5.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  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 runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  13. 13.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  16. 16.🔋 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%?
  17. 17.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a power cable (d) a solar panel
  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 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  20. 20.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 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%?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 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%?

Answer key

  1. 30
  2. sunlight (solar panels)
  3. 2
  4. 2
  5. 10.5
  6. 5
  7. 50
  8. 12
  9. 9
  10. 3
  11. 200
  12. give it to an adult
  13. 4.5
  14. 150
  15. 1
  16. 5
  17. a power cable
  18. 6
  19. 3
  20. 20
  21. 6
  22. 40
  23. 6
  24. 2
  25. 200
  26. 8
  27. 180
  28. 7.5
  29. 150
  30. 40
  31. 5
  32. 40
  33. 10
  34. 6
  35. 4
  36. 7
  37. 8
  38. 5
  39. 125
  40. 2

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