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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 749 · 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 400 mAh and the robot uses 200 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  5. 5.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) wind-up keys (d) petrol pumps
  7. 7.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  11. 11.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  12. 12.🔋 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
  13. 13.🔋 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
  14. 14.🔋 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%?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 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%?
  19. 19.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  20. 20.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 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%?
  31. 31.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 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%?
  34. 34.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a power cable (d) a solar panel
  38. 38.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a rechargeable battery (d) a tiny magnet
  40. 40.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 2
  2. 16
  3. 200
  4. 5
  5. 15
  6. sunlight (solar panels)
  7. 4
  8. 6
  9. 30
  10. mAh
  11. 4
  12. give it to an adult
  13. goes back to its dock
  14. 9
  15. 12
  16. 7
  17. 10
  18. 5
  19. 7
  20. 12
  21. 10
  22. 2
  23. 10
  24. 90
  25. 20
  26. 2
  27. 40
  28. 4
  29. 5
  30. 2
  31. 9
  32. 7.5
  33. 2
  34. 40
  35. 17
  36. 50
  37. a power cable
  38. 20
  39. a rechargeable battery
  40. 8

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