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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 262 · 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 uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) squeeze it flat (d) charge it again
  3. 3.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  4. 4.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 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%?
  17. 17.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) goes back to its dock (d) turns into a car
  22. 22.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) °C (d) km
  26. 26.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  28. 28.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a candle (d) a rechargeable battery
  31. 31.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  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 arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  35. 35.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 24
  2. give it to an adult
  3. 6
  4. 12
  5. 150
  6. 60
  7. 2
  8. 10
  9. 100
  10. 40
  11. 70
  12. 40
  13. 6
  14. 10
  15. 190
  16. 2
  17. 120
  18. 250
  19. 10
  20. sunlight (solar panels)
  21. goes back to its dock
  22. 100
  23. 20
  24. 40
  25. mAh
  26. 10.5
  27. 5
  28. 60
  29. 7.5
  30. a rechargeable battery
  31. 30
  32. 7
  33. 2
  34. a power cable
  35. 50
  36. 4
  37. 18
  38. 50
  39. 2
  40. 20

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