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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 932 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) kg (d) km
  2. 2.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) give it to an adult (d) throw it in a fire
  5. 5.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 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
  8. 8.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a rechargeable battery (d) a water tank
  15. 15.🔋 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%?
  16. 16.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 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%?
  22. 22.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  27. 27.🔋 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%?
  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’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 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%?
  35. 35.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) explodes (d) keeps going for ever
  36. 36.🔋 A robot uses 5% 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 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. mAh
  2. 125
  3. 50
  4. give it to an adult
  5. 6
  6. 10
  7. a power cable
  8. 6
  9. 3
  10. 12
  11. 3
  12. 200
  13. 4.5
  14. a rechargeable battery
  15. 2
  16. 7.5
  17. 1
  18. 4
  19. 19
  20. 75
  21. 8
  22. 8
  23. 5
  24. 1
  25. 80
  26. 50
  27. 8
  28. 50
  29. 4
  30. 16
  31. 100
  32. 10.5
  33. 8
  34. 3
  35. goes back to its dock
  36. 40
  37. 4
  38. 25
  39. 6
  40. 2

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