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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 927 · 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 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) charge it again (d) squeeze it flat
  5. 5.🔋 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%?
  6. 6.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  11. 11.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 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%?
  19. 19.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) °C (d) km
  20. 20.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  25. 25.🔋 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%?
  26. 26.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  27. 27.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) petrol pumps (d) shop batteries
  39. 39.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  40. 40.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 4.5
  2. 200
  3. 40
  4. give it to an adult
  5. 9
  6. 50
  7. 9
  8. 7
  9. 1
  10. 8
  11. 100
  12. 3
  13. 60
  14. 6
  15. 5
  16. 4
  17. 10
  18. 16
  19. mAh
  20. 4
  21. 8
  22. 3
  23. 5
  24. 1
  25. 7
  26. goes back to its dock
  27. 5
  28. 13
  29. 40
  30. 4
  31. 2
  32. 10
  33. 6
  34. 50
  35. 7.5
  36. 40
  37. 25
  38. sunlight (solar panels)
  39. a power cable
  40. 6

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