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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 338 · 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 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  3. 3.🔋 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%?
  4. 4.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) km (d) kg
  6. 6.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  9. 9.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  10. 10.🔋 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%?
  11. 11.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) wind-up keys (d) petrol pumps
  15. 15.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 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%?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) explodes (d) keeps going for ever
  23. 23.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) throw it in a fire (d) give it to an adult
  28. 28.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 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%?
  34. 34.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 2
  2. a rechargeable battery
  3. 8
  4. 10
  5. mAh
  6. 15
  7. 12
  8. a power cable
  9. 3
  10. 4
  11. 16
  12. 5
  13. 10
  14. sunlight (solar panels)
  15. 4.5
  16. 3
  17. 4
  18. 4
  19. 40
  20. 6
  21. 2
  22. goes back to its dock
  23. 300
  24. 1
  25. 10.5
  26. 1
  27. give it to an adult
  28. 100
  29. 25
  30. 25
  31. 7
  32. 10
  33. 9
  34. 50
  35. 120
  36. 5
  37. 20
  38. 4
  39. 40
  40. 2

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