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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 75 · 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) keeps going for ever (b) goes back to its dock (c) explodes (d) turns into a car
  2. 2.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  4. 4.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  5. 5.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 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%?
  9. 9.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a solar panel (d) a power cable
  11. 11.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  16. 16.🔋 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%?
  17. 17.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a candle (d) a water tank
  18. 18.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 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%?
  22. 22.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 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
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  29. 29.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 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%?
  31. 31.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 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%?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. goes back to its dock
  2. 7
  3. 6
  4. sunlight (solar panels)
  5. 120
  6. 9
  7. 4.5
  8. 8
  9. 6
  10. a power cable
  11. 3
  12. 5
  13. 4
  14. 25
  15. 1
  16. 4
  17. a rechargeable battery
  18. 8
  19. 4
  20. 7.5
  21. 2
  22. 16
  23. 50
  24. give it to an adult
  25. 2
  26. 10
  27. 50
  28. mAh
  29. 5
  30. 9
  31. 150
  32. 40
  33. 3
  34. 5
  35. 7
  36. 1
  37. 3
  38. 5
  39. 7
  40. 30

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