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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 412 · 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.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  2. 2.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) goes back to its dock (d) explodes
  4. 4.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  7. 7.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  9. 9.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. 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.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 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%?
  14. 14.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a tiny magnet (d) a rechargeable battery
  22. 22.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  26. 26.🔋 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%?
  27. 27.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. 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 uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 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
  34. 34.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. sunlight (solar panels)
  2. 300
  3. goes back to its dock
  4. 30
  5. 100
  6. mAh
  7. 10
  8. give it to an adult
  9. 17
  10. 3
  11. 60
  12. 20
  13. 3
  14. 6
  15. 2
  16. 8
  17. 6
  18. 60
  19. 10
  20. 3
  21. a rechargeable battery
  22. 120
  23. 20
  24. 4
  25. 2
  26. 2
  27. 7.5
  28. 6
  29. 9
  30. 2
  31. 100
  32. 4.5
  33. a power cable
  34. 50
  35. 4
  36. 6
  37. 10
  38. 20
  39. 80
  40. 20

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