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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 69 · 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.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  2. 2.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) kg (d) km
  6. 6.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 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%?
  15. 15.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a rechargeable battery (d) a candle
  16. 16.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 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
  20. 20.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) charge it again (c) throw it in a fire (d) squeeze it flat
  25. 25.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 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%?

Answer key

  1. goes back to its dock
  2. 12
  3. 9
  4. sunlight (solar panels)
  5. mAh
  6. 60
  7. 7
  8. 5
  9. 125
  10. 40
  11. 10.5
  12. 6
  13. 30
  14. 2
  15. a rechargeable battery
  16. 25
  17. 2
  18. 2
  19. a power cable
  20. 16
  21. 8
  22. 10
  23. 2
  24. give it to an adult
  25. 20
  26. 5
  27. 8
  28. 7
  29. 4.5
  30. 40
  31. 19
  32. 60
  33. 5
  34. 6
  35. 100
  36. 5
  37. 250
  38. 1
  39. 200
  40. 3

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