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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 112 · 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 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) explodes (d) goes back to its dock
  4. 4.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a candle (d) a rechargeable battery
  5. 5.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 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%?
  7. 7.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  11. 11.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) squeeze it flat (d) give it to an adult
  12. 12.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) sunlight (solar panels) (d) shop batteries
  13. 13.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  17. 17.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery is at 30%. 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 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 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%?
  24. 24.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) °C (d) mAh
  25. 25.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  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 uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 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%?
  35. 35.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 4
  2. 3
  3. goes back to its dock
  4. a rechargeable battery
  5. 30
  6. 7
  7. 9
  8. 5
  9. 190
  10. 4
  11. give it to an adult
  12. sunlight (solar panels)
  13. 5
  14. 4
  15. 7.5
  16. a power cable
  17. 1
  18. 8
  19. 20
  20. 8
  21. 6
  22. 2
  23. 8
  24. mAh
  25. 5
  26. 2
  27. 8
  28. 75
  29. 5
  30. 10.5
  31. 50
  32. 20
  33. 50
  34. 2
  35. 40
  36. 7
  37. 6
  38. 15
  39. 3
  40. 200

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