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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 750 · 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 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) goes back to its dock (d) explodes
  4. 4.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  6. 6.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) squeeze it flat (d) charge it again
  8. 8.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 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%?
  11. 11.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 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%?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  14. 14.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  15. 15.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 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%?
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  28. 28.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 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%?
  39. 39.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 10.5
  2. mAh
  3. goes back to its dock
  4. 120
  5. 1
  6. 60
  7. give it to an adult
  8. 3
  9. 8
  10. 2
  11. 12
  12. 4
  13. sunlight (solar panels)
  14. a power cable
  15. 9
  16. 50
  17. 8
  18. 50
  19. 180
  20. 30
  21. 150
  22. 4.5
  23. 4
  24. 3
  25. 9
  26. 2
  27. 6
  28. 20
  29. 4
  30. 1
  31. 11
  32. 3
  33. 7
  34. 7
  35. 6
  36. 5
  37. 5
  38. 12
  39. 15
  40. 8

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