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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 502 · 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.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  2. 2.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) goes back to its dock (d) explodes
  3. 3.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a candle (d) a tiny magnet
  4. 4.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  6. 6.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  7. 7.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  10. 10.🔋 A robot’s battery holds 500 mAh and the robot uses 100 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) give it to an adult (c) charge it again (d) squeeze it flat
  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 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) km (d) kg
  25. 25.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery is at 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. sunlight (solar panels)
  2. goes back to its dock
  3. a rechargeable battery
  4. 3
  5. 6
  6. a power cable
  7. 180
  8. 40
  9. 15
  10. 5
  11. give it to an adult
  12. 40
  13. 4.5
  14. 4
  15. 2
  16. 50
  17. 12
  18. 3
  19. 5
  20. 190
  21. 1
  22. 5
  23. 10.5
  24. mAh
  25. 24
  26. 20
  27. 200
  28. 150
  29. 70
  30. 20
  31. 100
  32. 60
  33. 7.5
  34. 60
  35. 125
  36. 3
  37. 6
  38. 6
  39. 12
  40. 7

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