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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 289 · 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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  10. 10.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a wind-up key (d) a power cable
  15. 15.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  18. 18.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 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%?
  20. 20.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) throw it in a fire (d) squeeze it flat
  24. 24.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 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%?
  31. 31.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  33. 33.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  34. 34.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 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%?
  38. 38.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a tiny magnet (d) a water tank

Answer key

  1. 6
  2. 25
  3. 10.5
  4. 40
  5. mAh
  6. 5
  7. 8
  8. 12
  9. 3
  10. 4.5
  11. 80
  12. 190
  13. 7.5
  14. a power cable
  15. 10
  16. 50
  17. goes back to its dock
  18. 170
  19. 3
  20. 10
  21. 40
  22. 70
  23. give it to an adult
  24. 40
  25. 20
  26. 40
  27. 5
  28. 2
  29. 8
  30. 2
  31. 9
  32. 3
  33. sunlight (solar panels)
  34. 30
  35. 24
  36. 100
  37. 2
  38. 3
  39. 30
  40. a rechargeable battery

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