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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 320 · 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.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a candle (d) a tiny magnet
  2. 2.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  7. 7.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a power cable (d) a coin cell
  8. 8.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 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
  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.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) squeeze it flat (c) charge it again (d) throw it in a fire
  14. 14.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) sunlight (solar panels) (c) wind-up keys (d) shop batteries
  15. 15.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) km (d) °C
  16. 16.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  21. 21.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 40% and charging adds 20% 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 is at 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. a rechargeable battery
  2. 10
  3. 70
  4. 4.5
  5. 20
  6. 5
  7. a power cable
  8. 8
  9. 30
  10. 9
  11. goes back to its dock
  12. 4
  13. give it to an adult
  14. sunlight (solar panels)
  15. mAh
  16. 50
  17. 180
  18. 3
  19. 150
  20. 4
  21. 12
  22. 6
  23. 3
  24. 1
  25. 190
  26. 3
  27. 4
  28. 6
  29. 200
  30. 20
  31. 5
  32. 5
  33. 75
  34. 150
  35. 50
  36. 8
  37. 30
  38. 10.5
  39. 2
  40. 1

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