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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 374 · 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 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 40% 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) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  5. 5.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 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%?
  10. 10.🔋 A robot runs on 2 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) goes back to its dock (b) keeps going for ever (c) turns into a car (d) explodes
  12. 12.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) wind-up keys (d) petrol pumps
  17. 17.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  18. 18.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a solar panel (d) a coin cell
  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.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  28. 28.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. 2
  2. 50
  3. 60
  4. give it to an adult
  5. 6
  6. 40
  7. 9
  8. 7
  9. 4
  10. 3
  11. goes back to its dock
  12. 200
  13. 1
  14. 4.5
  15. 170
  16. sunlight (solar panels)
  17. a rechargeable battery
  18. 8
  19. a power cable
  20. 20
  21. 12
  22. 4
  23. 8
  24. 6
  25. 7.5
  26. 9
  27. mAh
  28. 3
  29. 2
  30. 30
  31. 100
  32. 5
  33. 2
  34. 100
  35. 5
  36. 100
  37. 20
  38. 3
  39. 160
  40. 1

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