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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 739 · 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 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a coin cell (d) a power cable
  3. 3.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) charge it again (d) throw it in a fire
  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’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  13. 13.🔋 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%?
  14. 14.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 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%?
  16. 16.🔋 What powers most moving robots? (a) a rechargeable battery (b) a candle (c) a water tank (d) a tiny magnet
  17. 17.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) km (d) °C
  20. 20.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  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’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  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 is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

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

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