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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 42 · 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 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 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%?
  3. 3.🔋 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%?
  4. 4.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 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
  10. 10.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  11. 11.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a candle (d) a water tank
  12. 12.🔋 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%?
  13. 13.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  15. 15.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  19. 19.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) turns into a car (d) keeps going for ever
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a wind-up key (d) a power cable
  28. 28.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 10% of its battery every 2 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 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 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%?
  35. 35.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 5
  2. 8
  3. 2
  4. 190
  5. 80
  6. 13
  7. 4
  8. 40
  9. give it to an adult
  10. 6
  11. a rechargeable battery
  12. 4
  13. 200
  14. 5
  15. 12
  16. 1
  17. 9
  18. mAh
  19. 20
  20. 100
  21. goes back to its dock
  22. 4
  23. 8
  24. 40
  25. 100
  26. 70
  27. a power cable
  28. 10.5
  29. 6
  30. 20
  31. 100
  32. 2
  33. 50
  34. 5
  35. 10
  36. 12
  37. 60
  38. 4
  39. 5
  40. 50

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