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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 939 · 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 holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) squeeze it flat (d) charge it again
  6. 6.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a wind-up key (d) a power cable
  10. 10.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  11. 11.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a tiny magnet (d) a candle
  14. 14.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) °C (d) mAh
  16. 16.🔋 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%?
  17. 17.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  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 is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  24. 24.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 1
  2. 4
  3. 9
  4. 9
  5. give it to an adult
  6. 4
  7. 40
  8. 3
  9. a power cable
  10. sunlight (solar panels)
  11. 250
  12. 4.5
  13. a rechargeable battery
  14. 150
  15. mAh
  16. 2
  17. 2
  18. 8
  19. 14
  20. 6
  21. 60
  22. 4
  23. 2
  24. 4
  25. 30
  26. 5
  27. 2
  28. 2
  29. 125
  30. 1
  31. 70
  32. 5
  33. 24
  34. 160
  35. 40
  36. 7.5
  37. 18
  38. 8
  39. 100
  40. 60

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