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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 332 · 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.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) wind-up keys (c) petrol pumps (d) sunlight (solar panels)
  2. 2.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  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 runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  7. 7.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  13. 13.🔋 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%?
  14. 14.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) throw it in a fire (d) charge it again
  20. 20.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  32. 32.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. sunlight (solar panels)
  2. 60
  3. 5
  4. 4.5
  5. 9
  6. mAh
  7. 3
  8. 3
  9. 4
  10. 2
  11. 20
  12. 1
  13. 3
  14. 1
  15. 30
  16. 40
  17. 40
  18. 24
  19. give it to an adult
  20. 40
  21. 13
  22. 12
  23. 30
  24. 12
  25. 7
  26. 30
  27. 5
  28. 190
  29. 8
  30. 7
  31. a rechargeable battery
  32. 12
  33. 10
  34. 6
  35. 5
  36. 120
  37. 200
  38. 4
  39. 40
  40. 300

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