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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 275 · 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 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) km (d) °C
  4. 4.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 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%?
  6. 6.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 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%?
  11. 11.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 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%?
  13. 13.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  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’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  16. 16.🔋 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%?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  22. 22.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 0% and charging adds 10% 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 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) charge it again (d) throw it in a fire
  32. 32.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery is at 100%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries

Answer key

  1. 40
  2. 60
  3. mAh
  4. 30
  5. 3
  6. 20
  7. 50
  8. 2
  9. 10
  10. 3
  11. 7.5
  12. 5
  13. 5
  14. 6
  15. 4
  16. 2
  17. 2
  18. 200
  19. 9
  20. 20
  21. goes back to its dock
  22. 20
  23. 5
  24. 1
  25. 50
  26. 200
  27. 100
  28. 7
  29. 6
  30. 50
  31. give it to an adult
  32. 150
  33. 2
  34. 40
  35. 4.5
  36. 10
  37. 170
  38. 3
  39. 4
  40. sunlight (solar panels)

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