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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 679 · 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.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  2. 2.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  3. 3.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  7. 7.🔋 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%?
  8. 8.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  10. 10.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  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’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  21. 21.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 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%?
  27. 27.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) give it to an adult (d) throw it in a fire
  28. 28.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) mAh (d) kg
  29. 29.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 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’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. sunlight (solar panels)
  2. goes back to its dock
  3. 10
  4. 15
  5. 150
  6. 4
  7. 12
  8. 4
  9. a power cable
  10. 40
  11. 7
  12. 3
  13. 2
  14. 300
  15. 100
  16. 20
  17. 7.5
  18. 7
  19. 6
  20. 8
  21. 50
  22. 2
  23. 30
  24. 8
  25. 16
  26. 3
  27. give it to an adult
  28. mAh
  29. 40
  30. 3
  31. 1
  32. 2
  33. 5
  34. 50
  35. 190
  36. 250
  37. 40
  38. 10.5
  39. 7
  40. 4

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