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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 547 · 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 uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  6. 6.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a tiny magnet (d) a candle
  7. 7.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  9. 9.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  11. 11.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) goes back to its dock (d) keeps going for ever
  12. 12.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  15. 15.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 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%?
  19. 19.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  20. 20.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) kg (d) mAh
  22. 22.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot’s battery is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a power cable (d) a solar panel

Answer key

  1. 120
  2. 4
  3. 20
  4. give it to an adult
  5. 5
  6. a rechargeable battery
  7. 130
  8. 5
  9. 12
  10. sunlight (solar panels)
  11. goes back to its dock
  12. 10
  13. 125
  14. 8
  15. 80
  16. 8
  17. 10.5
  18. 4
  19. 2
  20. 50
  21. mAh
  22. 1
  23. 6
  24. 30
  25. 2
  26. 3
  27. 170
  28. 50
  29. 200
  30. 30
  31. 4
  32. 8
  33. 30
  34. 4
  35. 7.5
  36. 4.5
  37. 9
  38. 3
  39. 40
  40. a power cable

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