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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 342 · 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 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  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 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a tiny magnet (d) a candle
  6. 6.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a solar panel (d) a power cable
  7. 7.🔋 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%?
  8. 8.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  9. 9.🔋 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%?
  10. 10.🔋 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%?
  11. 11.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) keeps going for ever (c) explodes (d) turns into a car
  15. 15.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 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%?
  19. 19.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  21. 21.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) give it to an adult (d) squeeze it flat
  25. 25.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  28. 28.🔋 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%?
  29. 29.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  36. 36.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) petrol pumps (d) sunlight (solar panels)
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. 10
  2. 4
  3. 20
  4. 40
  5. a rechargeable battery
  6. a power cable
  7. 9
  8. mAh
  9. 17
  10. 2
  11. 6
  12. 125
  13. 100
  14. goes back to its dock
  15. 3
  16. 24
  17. 75
  18. 3
  19. 8
  20. 1
  21. 12
  22. 2
  23. 4
  24. give it to an adult
  25. 3
  26. 40
  27. 3
  28. 16
  29. 10
  30. 20
  31. 100
  32. 2
  33. 6
  34. 3
  35. 8
  36. 10.5
  37. 40
  38. sunlight (solar panels)
  39. 5
  40. 6

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