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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 82 · 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 should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) give it to an adult (d) squeeze it flat
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  3. 3.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  4. 4.🔋 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
  5. 5.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  6. 6.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a candle (d) a rechargeable battery
  8. 8.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 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%?
  11. 11.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  14. 14.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  15. 15.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  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 uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  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 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 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%?
  31. 31.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  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’s battery is at 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. give it to an adult
  2. a power cable
  3. 5
  4. goes back to its dock
  5. 3
  6. 100
  7. a rechargeable battery
  8. 15
  9. 180
  10. 5
  11. 6
  12. 5
  13. mAh
  14. sunlight (solar panels)
  15. 3
  16. 10.5
  17. 20
  18. 8
  19. 5
  20. 4
  21. 9
  22. 40
  23. 100
  24. 4
  25. 10
  26. 20
  27. 16
  28. 150
  29. 110
  30. 4
  31. 7.5
  32. 20
  33. 20
  34. 30
  35. 3
  36. 4.5
  37. 2
  38. 7
  39. 120
  40. 4

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